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Finding the Fourth Proportional to 96.59, 144.21 and 67.47

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Solution

The fourth proportional to 96.59, 144.21 and 67.47 is: 100.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.59 : 144.21 = 67.47 : x
  2. Step 2: Convert to fraction form
    96.59/144.21 = 67.47/x
  3. Step 3: Cross multiply
    96.59x = 144.21 × 67.47
  4. Step 4: Simplify right side
    96.59x = 9,729.85
  5. Step 5: Solve for x
    x = 9,729.85/96.59
  6. Step 6: Final answer
    x = 100.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.