291.5 is what percent of 331 - 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 331 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 331, so we can write it down as 100%=331.
4. We know, that x% equals 291.5 of the output value, so we can write it down as x%=291.5.
5. Now we have two simple equations:
1) 100%=331
2) x%=291.5
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%=331/291.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 291.5 is what percent of 331

100%/x%=331/291.5
(100/x)*x=(331/291.5)*x       - we multiply both sides of the equation by x
100=1.1355060034305*x       - we divide both sides of the equation by (1.1355060034305) to get x
100/1.1355060034305=x
88.066465256798=x
x=88.066465256798

now we have:
291.5 is 88.066465256798% of 331