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).
Proportion. Proportion is the fraction of a population who have a characteristic of interest. Those who are included in the numerator are also included in the denominator. As the numerator is a subgroup of the denominator the value is always between 0 and 1. Values can be expressed as a percentage by multiplying by 100.