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Finding the Fourth Proportional to 96.42, 144.34 and 57.73

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Solution

The fourth proportional to 96.42, 144.34 and 57.73 is: 86.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.42 : 144.34 = 57.73 : x
  2. Step 2: Convert to fraction form
    96.42/144.34 = 57.73/x
  3. Step 3: Cross multiply
    96.42x = 144.34 × 57.73
  4. Step 4: Simplify right side
    96.42x = 8,332.75
  5. Step 5: Solve for x
    x = 8,332.75/96.42
  6. Step 6: Final answer
    x = 86.42

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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.