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Finding the Third Proportional to 12.38 and 25.88

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Solution

The third proportional to 12.38 and 25.88 is: 54.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.38 : 25.88 = 25.88 : x
  2. Step 2: Convert to fraction form
    12.38/25.88 = 25.88/x
  3. Step 3: Cross multiply
    12.38x = 25.88 × 25.88
  4. Step 4: Simplify right side
    12.38x = 669.52
  5. Step 5: Solve for x
    x = 669.52/12.38
  6. Step 6: Final answer
    x = 54.10

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.