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Finding the Fourth Proportional to 132.34, 198.24 and 103.42

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Solution

The fourth proportional to 132.34, 198.24 and 103.42 is: 154.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.34 : 198.24 = 103.42 : x
  2. Step 2: Convert to fraction form
    132.34/198.24 = 103.42/x
  3. Step 3: Cross multiply
    132.34x = 198.24 × 103.42
  4. Step 4: Simplify right side
    132.34x = 20,501.98
  5. Step 5: Solve for x
    x = 20,501.98/132.34
  6. Step 6: Final answer
    x = 154.92

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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.