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Finding the Fourth Proportional to 96.82, 133.38 and 67.66

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Solution

The fourth proportional to 96.82, 133.38 and 67.66 is: 93.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.82 : 133.38 = 67.66 : x
  2. Step 2: Convert to fraction form
    96.82/133.38 = 67.66/x
  3. Step 3: Cross multiply
    96.82x = 133.38 × 67.66
  4. Step 4: Simplify right side
    96.82x = 9,024.49
  5. Step 5: Solve for x
    x = 9,024.49/96.82
  6. Step 6: Final answer
    x = 93.21

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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.