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Finding the Third Proportional to 43.38 and 63.81

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Solution

The third proportional to 43.38 and 63.81 is: 93.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.38 : 63.81 = 63.81 : x
  2. Step 2: Convert to fraction form
    43.38/63.81 = 63.81/x
  3. Step 3: Cross multiply
    43.38x = 63.81 × 63.81
  4. Step 4: Simplify right side
    43.38x = 4,072.04
  5. Step 5: Solve for x
    x = 4,072.04/43.38
  6. Step 6: Final answer
    x = 93.88

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.