a television station released 300 balloons. Of these, 3/4 were orange. How many were orange?

Again Im trying to divide it and the answer I get does not match the one in the book

3 answers

3/4 = x/300
so its 300/3/4? where did x come from?
no, it's 300 * 3/4 = 225

Setting up the proportion is just a way of saying,

if 3 out of every 4 balloons are orange, how many out of 300 are orange?

Note that it boils down to recognizing that "of" usually means "times"

3/4 of 300 means 3/4 * 300 = 225