(use a proportion) what is 128% of 550?

704

Step-by-step explanation:

1. We assume, that the number 550 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 550 is 100%, so we can write it down as 550=100%.

4. We know, that x is 128% of the output value, so we can write it down as x=128%.

5. Now we have two simple equations:

1) 550=100%

2) x=128%

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:

550/x=100%/128%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 128% of 550

550/x=100/128

(550/x)*x=(100/128)*x       - we multiply both sides of the equation by x

550=0.78125*x       - we divide both sides of the equation by (0.78125) to get x

550/0.78125=x

704=x

x=704

now we have:

128% of 550=704

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