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Finding the Fourth Proportional to 17.89, 24.71 and 16.88

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Solution

The fourth proportional to 17.89, 24.71 and 16.88 is: 23.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.89 : 24.71 = 16.88 : x
  2. Step 2: Convert to fraction form
    17.89/24.71 = 16.88/x
  3. Step 3: Cross multiply
    17.89x = 24.71 × 16.88
  4. Step 4: Simplify right side
    17.89x = 416.90
  5. Step 5: Solve for x
    x = 416.90/17.89
  6. Step 6: Final answer
    x = 23.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.