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Finding the Fourth Proportional to 17.87, 24.55 and 16.17

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Solution

The fourth proportional to 17.87, 24.55 and 16.17 is: 22.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.87 : 24.55 = 16.17 : x
  2. Step 2: Convert to fraction form
    17.87/24.55 = 16.17/x
  3. Step 3: Cross multiply
    17.87x = 24.55 × 16.17
  4. Step 4: Simplify right side
    17.87x = 396.93
  5. Step 5: Solve for x
    x = 396.93/17.87
  6. Step 6: Final answer
    x = 22.21

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.