Finding the Third Proportional to 681 and 1,140
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Solution
The third proportional to 681 and 1,140 is: 1,908.37
Step by Step Solution
- Step 1: Write the proportion equation
681 : 1,140 = 1,140 : x - Step 2: Convert to fraction form
681/1,140 = 1,140/x - Step 3: Cross multiply
681x = 1,140 × 1,140 - Step 4: Simplify right side
681x = 1,299,600 - Step 5: Solve for x
x = 1,299,600/681 - Step 6: Final answer
x = 1,908.37
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These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.