Question

Need to write a proportion to find the length of PS

Answer 1

Okay, here we have this:

Considering the provided information, and figures, we are going to find the requested length, so we obtain the following:

Let us remember that if two figures are proportional, then they are proportional between corresponding segments, therefore we have:

`\begin{gathered} (RS)/(VW)=(PS)/(TW) \\ (35)/(25)=(PS)/(15) \\ PS=(35)/(25)\cdot15 \\ PS=(7)/(5)\cdot15 \\ PS=(105)/(5) \\ PS=21 \end{gathered}`

Finally we obtain that the measure of PS is 21 units.