34 is what percent of 644 - 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 644 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 644, so we can write it down as 100%=644.
4. We know, that x% equals 34 of the output value, so we can write it down as x%=34.
5. Now we have two simple equations:
1) 100%=644
2) x%=34
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%=644/34
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 34 is what percent of 644

100%/x%=644/34
(100/x)*x=(644/34)*x       - we multiply both sides of the equation by x
100=18.941176470588*x       - we divide both sides of the equation by (18.941176470588) to get x
100/18.941176470588=x
5.2795031055901=x
x=5.2795031055901

now we have:
34 is 5.2795031055901% of 644