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Finding the Third Proportional to 13.38 and 17

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Solution

The third proportional to 13.38 and 17 is: 21.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.38 : 17 = 17 : x
  2. Step 2: Convert to fraction form
    13.38/17 = 17/x
  3. Step 3: Cross multiply
    13.38x = 17 × 17
  4. Step 4: Simplify right side
    13.38x = 289
  5. Step 5: Solve for x
    x = 289/13.38
  6. Step 6: Final answer
    x = 21.61

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.