Forgive the double-post, but I've run into some trouble regarding the reference points for a model I've been working on.

The reference is (4+(2sqrt2)) : (7+(2sqrt2)). I'm going to use the midpoint of the edge as another reference point, so the equivalent proportion in each quadrant would be (from the corner) (4+(2sqrt2)) : 3. The first part is easy to find since it's essentially a Fish Base, but for some reason I'm having trouble constructing (7+(2sqrt2)).

An alternate proportion that would be of equal help is (3+(2sqrt2)) : 4. It, too, should be easier than I'm finding it to be.

Any help will be greatly appreciated.