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Finding the Fourth Proportional to 367.92, 551.03 and 213.46

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Solution

The fourth proportional to 367.92, 551.03 and 213.46 is: 319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.92 : 551.03 = 213.46 : x
  2. Step 2: Convert to fraction form
    367.92/551.03 = 213.46/x
  3. Step 3: Cross multiply
    367.92x = 551.03 × 213.46
  4. Step 4: Simplify right side
    367.92x = 117,622.86
  5. Step 5: Solve for x
    x = 117,622.86/367.92
  6. Step 6: Final answer
    x = 319.70

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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.