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Finding the Fourth Proportional to 367.60, 551.26 and 213.56

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Solution

The fourth proportional to 367.60, 551.26 and 213.56 is: 320.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.60 : 551.26 = 213.56 : x
  2. Step 2: Convert to fraction form
    367.60/551.26 = 213.56/x
  3. Step 3: Cross multiply
    367.60x = 551.26 × 213.56
  4. Step 4: Simplify right side
    367.60x = 117,728.73
  5. Step 5: Solve for x
    x = 117,728.73/367.60
  6. Step 6: Final answer
    x = 320.27

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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.