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Finding the Fourth Proportional to 367.55, 551.08 and 136.40

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Solution

The fourth proportional to 367.55, 551.08 and 136.40 is: 204.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.55 : 551.08 = 136.40 : x
  2. Step 2: Convert to fraction form
    367.55/551.08 = 136.40/x
  3. Step 3: Cross multiply
    367.55x = 551.08 × 136.40
  4. Step 4: Simplify right side
    367.55x = 75,164.22
  5. Step 5: Solve for x
    x = 75,164.22/367.55
  6. Step 6: Final answer
    x = 204.50

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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.