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Finding the Fourth Proportional to 367.29, 550.20 and 212.76

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Solution

The fourth proportional to 367.29, 550.20 and 212.76 is: 318.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.29 : 550.20 = 212.76 : x
  2. Step 2: Convert to fraction form
    367.29/550.20 = 212.76/x
  3. Step 3: Cross multiply
    367.29x = 550.20 × 212.76
  4. Step 4: Simplify right side
    367.29x = 117,060.55
  5. Step 5: Solve for x
    x = 117,060.55/367.29
  6. Step 6: Final answer
    x = 318.71

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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.