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Finding the Fourth Proportional to 367.74, 551.54 and 136.73

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Solution

The fourth proportional to 367.74, 551.54 and 136.73 is: 205.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.74 : 551.54 = 136.73 : x
  2. Step 2: Convert to fraction form
    367.74/551.54 = 136.73/x
  3. Step 3: Cross multiply
    367.74x = 551.54 × 136.73
  4. Step 4: Simplify right side
    367.74x = 75,412.06
  5. Step 5: Solve for x
    x = 75,412.06/367.74
  6. Step 6: Final answer
    x = 205.07

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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.