Re-size Multiple Vertex's from centers

The situation: I have 3 cylinder columns/posts (all within the same object), I have each post sub-divided… I am selecting a loop (alt+rmb) of one, then shift+alt+rmb for each of the loops on the other two posts…

Problem: I am wanting to re-size (s) all three selected loops from their centers at the same time to re-size…

My solution (the long way): select alt+rmb on one post the circle/loop/ring then s+ctrl and move mouse to size I want and take note of the dimension… then repeat process for each post by selecting them, then s+ the number that I paid attention to…

is there a way to do this to a ll 3 at the same time instead of individually or do I continue doing it that way I am?

Thanks!

With vertices selected, hit Alt + S (Shrink/Fatten)

Thanks much - a lot quicker that way… heh thought I tried alt+s but must not have thanks again