Finding the Third Proportional to 139 and 374
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Solution
The third proportional to 139 and 374 is: 1,006.30
Step by Step Solution
- Step 1: Write the proportion equation
139 : 374 = 374 : x - Step 2: Convert to fraction form
139/374 = 374/x - Step 3: Cross multiply
139x = 374 × 374 - Step 4: Simplify right side
139x = 139,876 - Step 5: Solve for x
x = 139,876/139 - Step 6: Final answer
x = 1,006.30
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Why These Related Problems?
These problems maintain the same ratio (2.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.