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Finding the Third Proportional to 769.03 and 1,691.91

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Solution

The third proportional to 769.03 and 1,691.91 is: 3,722.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    769.03 : 1,691.91 = 1,691.91 : x
  2. Step 2: Convert to fraction form
    769.03/1,691.91 = 1,691.91/x
  3. Step 3: Cross multiply
    769.03x = 1,691.91 × 1,691.91
  4. Step 4: Simplify right side
    769.03x = 2,862,546.76
  5. Step 5: Solve for x
    x = 2,862,546.76/769.03
  6. Step 6: Final answer
    x = 3,722.28

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.