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Finding the Third Proportional to 640.97 and 951.19

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Solution

The third proportional to 640.97 and 951.19 is: 1,411.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.97 : 951.19 = 951.19 : x
  2. Step 2: Convert to fraction form
    640.97/951.19 = 951.19/x
  3. Step 3: Cross multiply
    640.97x = 951.19 × 951.19
  4. Step 4: Simplify right side
    640.97x = 904,757.66
  5. Step 5: Solve for x
    x = 904,757.66/640.97
  6. Step 6: Final answer
    x = 1,411.55

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.