442.5 is what percent of 557 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 557 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 557, so we can write it down as 100%=557.
4. We know, that x% equals 442.5 of the output value, so we can write it down as x%=442.5.
5. Now we have two simple equations:
1) 100%=557
2) x%=442.5
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=557/442.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 442.5 is what percent of 557

100%/x%=557/442.5
(100/x)*x=(557/442.5)*x       - we multiply both sides of the equation by x
100=1.2587570621469*x       - we divide both sides of the equation by (1.2587570621469) to get x
100/1.2587570621469=x
79.443447037702=x
x=79.443447037702

now we have:
442.5 is 79.443447037702% of 557