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Finding the Third Proportional to 21.13 and 29.38

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Solution

The third proportional to 21.13 and 29.38 is: 40.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21.13 : 29.38 = 29.38 : x
  2. Step 2: Convert to fraction form
    21.13/29.38 = 29.38/x
  3. Step 3: Cross multiply
    21.13x = 29.38 × 29.38
  4. Step 4: Simplify right side
    21.13x = 862.89
  5. Step 5: Solve for x
    x = 862.89/21.13
  6. Step 6: Final answer
    x = 40.85

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.