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Finding the Fourth Proportional to 367.39, 550.76 and 123.86

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Solution

The fourth proportional to 367.39, 550.76 and 123.86 is: 185.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.39 : 550.76 = 123.86 : x
  2. Step 2: Convert to fraction form
    367.39/550.76 = 123.86/x
  3. Step 3: Cross multiply
    367.39x = 550.76 × 123.86
  4. Step 4: Simplify right side
    367.39x = 68,217.89
  5. Step 5: Solve for x
    x = 68,217.89/367.39
  6. Step 6: Final answer
    x = 185.68

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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.