321.36 is what percent of 669.5 - 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 669.5 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 669.5, so we can write it down as 100%=669.5.
4. We know, that x% equals 321.36 of the output value, so we can write it down as x%=321.36.
5. Now we have two simple equations:
1) 100%=669.5
2) x%=321.36
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%=669.5/321.36
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 321.36 is what percent of 669.5

100%/x%=669.5/321.36
(100/x)*x=(669.5/321.36)*x       - we multiply both sides of the equation by x
100=2.0833333333333*x       - we divide both sides of the equation by (2.0833333333333) to get x
100/2.0833333333333=x
48=x
x=48

now we have:
321.36 is 48% of 669.5