sub triple ratio (or proportion)

The ratio or proportion of 1 to 3. "The power will be in sub triple proportion to the weight."-Wilkins: Math. Magick. sub-trip-li-cate, a . [Pref. sub- , and Eng. trip. licate (q. v.).] In the ratio of the cube roots; as, Na: No is the subtriplicate ratio of a : b . 3