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Finding the Third Proportional to 481.38 and 765.13

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Solution

The third proportional to 481.38 and 765.13 is: 1,216.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.38 : 765.13 = 765.13 : x
  2. Step 2: Convert to fraction form
    481.38/765.13 = 765.13/x
  3. Step 3: Cross multiply
    481.38x = 765.13 × 765.13
  4. Step 4: Simplify right side
    481.38x = 585,416.27
  5. Step 5: Solve for x
    x = 585,416.27/481.38
  6. Step 6: Final answer
    x = 1,216.13

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.