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Finding the Third Proportional to 769.82 and 1,202.90

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Solution

The third proportional to 769.82 and 1,202.90 is: 1,879.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    769.82 : 1,202.90 = 1,202.90 : x
  2. Step 2: Convert to fraction form
    769.82/1,202.90 = 1,202.90/x
  3. Step 3: Cross multiply
    769.82x = 1,202.90 × 1,202.90
  4. Step 4: Simplify right side
    769.82x = 1,446,962.30
  5. Step 5: Solve for x
    x = 1,446,962.30/769.82
  6. Step 6: Final answer
    x = 1,879.62

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.