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Finding the Fourth Proportional to 18.97, 28.46 and 10.96

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Solution

The fourth proportional to 18.97, 28.46 and 10.96 is: 16.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.97 : 28.46 = 10.96 : x
  2. Step 2: Convert to fraction form
    18.97/28.46 = 10.96/x
  3. Step 3: Cross multiply
    18.97x = 28.46 × 10.96
  4. Step 4: Simplify right side
    18.97x = 311.92
  5. Step 5: Solve for x
    x = 311.92/18.97
  6. Step 6: Final answer
    x = 16.44

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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.