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Finding the Fourth Proportional to 367.78, 551.75 and 124.30

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Solution

The fourth proportional to 367.78, 551.75 and 124.30 is: 186.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.78 : 551.75 = 124.30 : x
  2. Step 2: Convert to fraction form
    367.78/551.75 = 124.30/x
  3. Step 3: Cross multiply
    367.78x = 551.75 × 124.30
  4. Step 4: Simplify right side
    367.78x = 68,582.53
  5. Step 5: Solve for x
    x = 68,582.53/367.78
  6. Step 6: Final answer
    x = 186.48

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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.