About Rule of Three - Calculator
Rule of Three is a simple but very useful calculator when you need to calculate ratios which are proportional to each other, for both modes direct and inverse proportional. For a better understanding we have this example:...
Rule of Three is a simple but very useful calculator when you need to calculate ratios which are proportional to each other, for both modes direct and inverse proportional.
For a better understanding we have this example:
For traveling 250 Km a car needs 18.50 litres of petrol and we want to know how many litres of petrol the car will need for traveling 475 Km ... ?
Then we have the next known values that we can use for calculating the unknown one, in our case "x":
a a="" b="">
c c="" x="">
We also know that the calculation mode has to be direct mode because the values are directly proportional to each other, (the larger distance the car will travel the more petrol it will consume).
All we have to do is filling in the known values into their corresponding fields, selecting "Direct mode" and press the "CALCULATE" button, the result will be shown in the result field.
In this way we can use My Rule of Three calculator for calculating the unknown value that in this case will be 35.15 litres.
The application can also save up to 100 calculations in its history memory including all the values, if they might be needed for a later use.
I hope you will find this application useful and enjoy it ... !!!
Previous Versions
Here you can find the changelog of Rule of Three - Calculator since it was posted on our website on 2020-09-02 14:32:05.
The latest version is 2.07 and it was updated on 2024-04-22 12:24:40. See below the changes in each version.
Rule of Three - Calculator version 2.07
Updated At: 2023-12-10
Changes: *** IF UPDATING FROM PREVIOUS VERSION AND THE APP FAILS TO START ... PLEASE UNINSTALL AND REINSTALL THE APP ... VERY SORRY FOR THE INCONVENIENCE ... !!! ***
The number of maximum characters that can be used for the Record Label has be increased from 40 to 100.
In the title bar of the Record Label dialog now it will be shown the number of remaining characters to be used ... previously it was shown the number of used characters.
Rule of Three - Calculator version 2.05
Updated At: 2022-02-05
Changes: Android 12 compatibility added.
Now you can add a label for each record and lock it if you want in order not to be removed from history when the memory reaches its maximum capacity ... you will always have at least a minimum of 10 records which cannot be locked in order to always maintain in the memory the last 10 calculations made.
History list records capacity increased from 100 to 210.
Minor changes for the user interface.
Minor improvements.
Rule of Three - Calculator version 2.00
Updated At: 2021-08-22
Changes: Now you can add a label for each record and lock it if you want in order not to be removed from history when the memory reaches its maximum capacity ... you will always have at least a minimum of 10 records which cannot be locked in order to always maintain in the memory the last 10 calculations made.
History list records capacity increased from 100 to 210.
Minor changes for the user interface.
Minor improvements.
Rule of Three - Calculator version 1.07
Updated At: 2020-10-07
Changes: Added some functions for the history list records.
System soft keyboard replaced.
Minor changes for the user interface.
Minor improvements.
Rule of Three - Calculator version 1.02
Updated At: 2020-08-30
Changes: Added the possibility of configuring the decimal precision of the result.
Minor improvements.
Disclaimer
Official Google Play Link
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