Matt,
I didn't post code because I don't need help with code. I just need a formula. Can't post a 'FIP' (formula in progress) if I don't know where to start.
Le and dgorsman,
I don't get why you are talking about triangles. I don't think I am trying to solve a triangle. I show a triangle to give clarity to my problem. The measurement that shows as 1' could be any number, unrelated to the the other numbers.
Kerry,
Once again you have come through for me!
Thanks to all for trying to help!