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Finding the Fourth Proportional to 367.55, 551.21 and 136.43

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Solution

The fourth proportional to 367.55, 551.21 and 136.43 is: 204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.55 : 551.21 = 136.43 : x
  2. Step 2: Convert to fraction form
    367.55/551.21 = 136.43/x
  3. Step 3: Cross multiply
    367.55x = 551.21 × 136.43
  4. Step 4: Simplify right side
    367.55x = 75,200.90
  5. Step 5: Solve for x
    x = 75,200.90/367.55
  6. Step 6: Final answer
    x = 204.60

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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.