doh I "typoed" this when I worked it out.. I wrote down 180 instead of 108... and that would yield 21.6 instead of 36.. so either I'm clueless as to the real pattern or 60 isn't supposed to be put through the process.

>Hmm, in Jay's solved example, each column maintains a top/bottom ratio of 4/7. My assumption was the second, unsolved example is supposed to work the same way, so X would be 21.6.
>
>How are you getting 36?