399.5 is what percent of 549.75 - 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 549.75 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 549.75, so we can write it down as 100%=549.75.
4. We know, that x% equals 399.5 of the output value, so we can write it down as x%=399.5.
5. Now we have two simple equations:
1) 100%=549.75
2) x%=399.5
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%=549.75/399.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 399.5 is what percent of 549.75

100%/x%=549.75/399.5
(100/x)*x=(549.75/399.5)*x       - we multiply both sides of the equation by x
100=1.3760951188986*x       - we divide both sides of the equation by (1.3760951188986) to get x
100/1.3760951188986=x
72.669395179627=x
x=72.669395179627

now we have:
399.5 is 72.669395179627% of 549.75