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Finding the Third Proportional to 616.88 and 922.69

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Solution

The third proportional to 616.88 and 922.69 is: 1,380.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.88 : 922.69 = 922.69 : x
  2. Step 2: Convert to fraction form
    616.88/922.69 = 922.69/x
  3. Step 3: Cross multiply
    616.88x = 922.69 × 922.69
  4. Step 4: Simplify right side
    616.88x = 851,352.22
  5. Step 5: Solve for x
    x = 851,352.22/616.88
  6. Step 6: Final answer
    x = 1,380.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.