Question 1137466
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Consider how each factor changes the weight, comparing the new bass to the reference prize-winning bass.<br>
The new length is 31 inches; the reference length is 36 inches.  The weight is proportional to the square of the length, so the reference weight will get multiplied by (31/36)^2.<br>
The new girth is 22 inches; the reference girth is 20 inches.  The weight is proportional to the girth, so the reference weight will get multiplied by 22/20 = 11/10.<br>
{{{22.5*(31/36)^2*(11/10) = 18.3524}}}<br>
To the nearest tenth of a pound, the bass with length 31 inches and girth 22 inches will weigh 18.4 pounds.