350.88 is what percent of 640 - 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 640 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 640, so we can write it down as 100%=640.
4. We know, that x% equals 350.88 of the output value, so we can write it down as x%=350.88.
5. Now we have two simple equations:
1) 100%=640
2) x%=350.88
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%=640/350.88
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 350.88 is what percent of 640

100%/x%=640/350.88
(100/x)*x=(640/350.88)*x       - we multiply both sides of the equation by x
100=1.8239854081167*x       - we divide both sides of the equation by (1.8239854081167) to get x
100/1.8239854081167=x
54.825=x
x=54.825

now we have:
350.88 is 54.825% of 640