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Finding the Third Proportional to 6.38 and 13.56

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Solution

The third proportional to 6.38 and 13.56 is: 28.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.38 : 13.56 = 13.56 : x
  2. Step 2: Convert to fraction form
    6.38/13.56 = 13.56/x
  3. Step 3: Cross multiply
    6.38x = 13.56 × 13.56
  4. Step 4: Simplify right side
    6.38x = 183.94
  5. Step 5: Solve for x
    x = 183.94/6.38
  6. Step 6: Final answer
    x = 28.85

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.