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Finding the Fourth Proportional to 17.38, 26.03 and 11.28

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Solution

The fourth proportional to 17.38, 26.03 and 11.28 is: 16.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.38 : 26.03 = 11.28 : x
  2. Step 2: Convert to fraction form
    17.38/26.03 = 11.28/x
  3. Step 3: Cross multiply
    17.38x = 26.03 × 11.28
  4. Step 4: Simplify right side
    17.38x = 293.49
  5. Step 5: Solve for x
    x = 293.49/17.38
  6. Step 6: Final answer
    x = 16.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.