 | Edward Hatton - Algebra - 1721 - 524 pages
...Produft of the two Extremes is equal to the Square of the Mean, as y, 20, 80, equal to 400. ..-•jthly, If two Numbers be given, it follows from the laft,...Proportional may be found by multiplying them together, and extra&ing the Square Root of the Product. Thus in the laft Example 5 times 80 is 400; the Square -Root... | |
 | Charles Butler - Mathematics - 1814 - 536 pages
...intermediate number lies, the extremes. 2. Between the two extremes, find a geometrical mean proportional, by multiplying them together, and extracting the square root of the product. 3. Take the logarithms of the two extremes, add them together, and divide the sum by 2 ; the quotient... | |
 | Anthony Nesbit - Surveying - 1824 - 474 pages
...measure 24, the mean proportional sought. NOTE. A mean proportional between any two numbers may also be found by multiplying them together, and extracting the square root of their product. PROBLEM XXIX. To raise a perpendicular from any point D, in' a given line AB, by a scale... | |
 | Anthony Nesbit - Measurement - 1859 - 494 pages
...measure 24, the mean proportional sought. NOTE. — A mean proportional between any two numbers may also be found, by multiplying them together, and extracting the square root of their product. PROBLEM XXIX. To raise a perpendicular from any point D, in a given line AB, by a scale... | |
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A mean proportional between any two numbers may also be found by multiplying them together, and extracting the square root of their product. PROBLEM XXIX. To raise a perpendicular from any point D, in... 