315.58 is what percent of 440 - 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 440 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 440, so we can write it down as 100%=440.
4. We know, that x% equals 315.58 of the output value, so we can write it down as x%=315.58.
5. Now we have two simple equations:
1) 100%=440
2) x%=315.58
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%=440/315.58
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 315.58 is what percent of 440

100%/x%=440/315.58
(100/x)*x=(440/315.58)*x       - we multiply both sides of the equation by x
100=1.3942581912669*x       - we divide both sides of the equation by (1.3942581912669) to get x
100/1.3942581912669=x
71.722727272727=x
x=71.722727272727

now we have:
315.58 is 71.722727272727% of 440