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Finding the Fourth Proportional to 96.53, 133.26 and 93.80

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Solution

The fourth proportional to 96.53, 133.26 and 93.80 is: 129.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.53 : 133.26 = 93.80 : x
  2. Step 2: Convert to fraction form
    96.53/133.26 = 93.80/x
  3. Step 3: Cross multiply
    96.53x = 133.26 × 93.80
  4. Step 4: Simplify right side
    96.53x = 12,499.12
  5. Step 5: Solve for x
    x = 12,499.12/96.53
  6. Step 6: Final answer
    x = 129.49

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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.