If I make 5 out of every 18 shots I shoot, how many should I make if I shoot 100 shots?

I get 27, is that correct?

Yes.

To calculate the number of shots you should make if you shoot 100 shots, you need to use the ratio of shots made to total shots, which is 5 out of 18.

First, you can set up a proportion:

⇒ 5 / 18 = X / 100

To solve for X, you can cross multiply:

⇒ 18X = 5 * 100

⇒ 18X = 500

Finally, divide both sides by 18 to solve for X:

⇒ X = 500 / 18

Using long division, you find that:

⇒ X ≈ 27.7778

Rounding to the nearest whole number, you should make around 28 shots if you shoot 100 shots, not 27.