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Finding the Third Proportional to 39.38 and 83.44

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Solution

The third proportional to 39.38 and 83.44 is: 176.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.38 : 83.44 = 83.44 : x
  2. Step 2: Convert to fraction form
    39.38/83.44 = 83.44/x
  3. Step 3: Cross multiply
    39.38x = 83.44 × 83.44
  4. Step 4: Simplify right side
    39.38x = 6,961.82
  5. Step 5: Solve for x
    x = 6,961.82/39.38
  6. Step 6: Final answer
    x = 176.81

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.