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Finding the Fourth Proportional to 367.40, 551.04 and 120.60

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Solution

The fourth proportional to 367.40, 551.04 and 120.60 is: 180.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.40 : 551.04 = 120.60 : x
  2. Step 2: Convert to fraction form
    367.40/551.04 = 120.60/x
  3. Step 3: Cross multiply
    367.40x = 551.04 × 120.60
  4. Step 4: Simplify right side
    367.40x = 66,456.80
  5. Step 5: Solve for x
    x = 66,456.80/367.40
  6. Step 6: Final answer
    x = 180.88

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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.