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Finding the Fourth Proportional to 17.11, 25.51 and 16.62

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Solution

The fourth proportional to 17.11, 25.51 and 16.62 is: 24.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.11 : 25.51 = 16.62 : x
  2. Step 2: Convert to fraction form
    17.11/25.51 = 16.62/x
  3. Step 3: Cross multiply
    17.11x = 25.51 × 16.62
  4. Step 4: Simplify right side
    17.11x = 423.98
  5. Step 5: Solve for x
    x = 423.98/17.11
  6. Step 6: Final answer
    x = 24.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.