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Finding the Fourth Proportional to 367.95, 551.79 and 136.79

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Solution

The fourth proportional to 367.95, 551.79 and 136.79 is: 205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.95 : 551.79 = 136.79 : x
  2. Step 2: Convert to fraction form
    367.95/551.79 = 136.79/x
  3. Step 3: Cross multiply
    367.95x = 551.79 × 136.79
  4. Step 4: Simplify right side
    367.95x = 75,476.60
  5. Step 5: Solve for x
    x = 75,476.60/367.95
  6. Step 6: Final answer
    x = 205.13

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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.