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Finding the Fourth Proportional to 17.44, 26.17 and 12.90

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Solution

The fourth proportional to 17.44, 26.17 and 12.90 is: 19.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.44 : 26.17 = 12.90 : x
  2. Step 2: Convert to fraction form
    17.44/26.17 = 12.90/x
  3. Step 3: Cross multiply
    17.44x = 26.17 × 12.90
  4. Step 4: Simplify right side
    17.44x = 337.59
  5. Step 5: Solve for x
    x = 337.59/17.44
  6. Step 6: Final answer
    x = 19.36

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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.