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Finding the Fourth Proportional to 101.27, 151.90 and 75.89

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Solution

The fourth proportional to 101.27, 151.90 and 75.89 is: 113.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.27 : 151.90 = 75.89 : x
  2. Step 2: Convert to fraction form
    101.27/151.90 = 75.89/x
  3. Step 3: Cross multiply
    101.27x = 151.90 × 75.89
  4. Step 4: Simplify right side
    101.27x = 11,527.69
  5. Step 5: Solve for x
    x = 11,527.69/101.27
  6. Step 6: Final answer
    x = 113.83

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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.