the method of finding the fourth term in a proportion when three terms are given.
rule of three
a mathematical rule asserting that the value of one unknown quantity in a proportion is found by multiplying the denominator of each ratio by the numerator of the other
noun 1. a general or approximate principle, procedure, or rule based on experience or practice, as opposed to a specific, scientific calculation or estimate. 2. a rough, practical method of procedure. rule of thumb noun 1. a rough and practical approach, based on experience, rather than a scientific or precise one based on theory (as […]
noun 1. the act or fact of ruling or the state of being ruled: Foreign rulership of the country began in the 18th century.
noun 1. a principle or regulation governing conduct, action, procedure, arrangement, etc.: the rules of chess. 2. the code of regulations observed by a religious order or congregation: the Franciscan rule. 3. the customary or normal circumstance, occurrence, manner, practice, quality, etc.: the rule rather than the exception. 4. control, government, or dominion: under the […]
noun 1. a special committee of a legislature, as of the U.S. House of Representatives, having the authority to establish rules or methods for expediting legislative action, and usually determining the date a bill is presented for consideration.