Finding the Third Proportional to 291 and 331
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Solution
The third proportional to 291 and 331 is: 376.50
Step by Step Solution
- Step 1: Write the proportion equation
291 : 331 = 331 : x - Step 2: Convert to fraction form
291/331 = 331/x - Step 3: Cross multiply
291x = 331 × 331 - Step 4: Simplify right side
291x = 109,561 - Step 5: Solve for x
x = 109,561/291 - Step 6: Final answer
x = 376.50
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These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.