This paper explains the characteristics of Transverse Mercator projections, the relationship of plane grids to USGS map cells, and the reasons DRG's and other USGS digital products are projected on the UTM.
âº If two amounts are proportional, they change at the same rate so that the relationship between them does not change: 1  Weight is proportional to size. 2  How far you go is directly proportional to how fast you go (= as one thing increases, the other increases at exactly the same rate).
âº art Proportion is also the correct relationship of the parts of a work of art to each other, especially in their size. âº mathematics A proportion is also a equation (= mathematical statement) that shows two ratios (= comparisons) are equal.