891.31 is what percent of 909.5 - 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 909.5 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 909.5, so we can write it down as 100%=909.5.
4. We know, that x% equals 891.31 of the output value, so we can write it down as x%=891.31.
5. Now we have two simple equations:
1) 100%=909.5
2) x%=891.31
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%=909.5/891.31
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 891.31 is what percent of 909.5

100%/x%=909.5/891.31
(100/x)*x=(909.5/891.31)*x       - we multiply both sides of the equation by x
100=1.0204081632653*x       - we divide both sides of the equation by (1.0204081632653) to get x
100/1.0204081632653=x
98=x
x=98

now we have:
891.31 is 98% of 909.5