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Finding the Fourth Proportional to 16.37, 24.62 and 8.78

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Solution

The fourth proportional to 16.37, 24.62 and 8.78 is: 13.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.37 : 24.62 = 8.78 : x
  2. Step 2: Convert to fraction form
    16.37/24.62 = 8.78/x
  3. Step 3: Cross multiply
    16.37x = 24.62 × 8.78
  4. Step 4: Simplify right side
    16.37x = 216.17
  5. Step 5: Solve for x
    x = 216.17/16.37
  6. Step 6: Final answer
    x = 13.20

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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.