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Finding the Fourth Proportional to 96.46, 133.04 and 67.40

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Solution

The fourth proportional to 96.46, 133.04 and 67.40 is: 92.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.46 : 133.04 = 67.40 : x
  2. Step 2: Convert to fraction form
    96.46/133.04 = 67.40/x
  3. Step 3: Cross multiply
    96.46x = 133.04 × 67.40
  4. Step 4: Simplify right side
    96.46x = 8,966.90
  5. Step 5: Solve for x
    x = 8,966.90/96.46
  6. Step 6: Final answer
    x = 92.96

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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.