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Finding the Fourth Proportional to 367.32, 551.13 and 161.88

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Solution

The fourth proportional to 367.32, 551.13 and 161.88 is: 242.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.32 : 551.13 = 161.88 : x
  2. Step 2: Convert to fraction form
    367.32/551.13 = 161.88/x
  3. Step 3: Cross multiply
    367.32x = 551.13 × 161.88
  4. Step 4: Simplify right side
    367.32x = 89,216.92
  5. Step 5: Solve for x
    x = 89,216.92/367.32
  6. Step 6: Final answer
    x = 242.89

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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.