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Finding the Fourth Proportional to 229.94, 344.88 and 67.62

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Solution

The fourth proportional to 229.94, 344.88 and 67.62 is: 101.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.94 : 344.88 = 67.62 : x
  2. Step 2: Convert to fraction form
    229.94/344.88 = 67.62/x
  3. Step 3: Cross multiply
    229.94x = 344.88 × 67.62
  4. Step 4: Simplify right side
    229.94x = 23,320.79
  5. Step 5: Solve for x
    x = 23,320.79/229.94
  6. Step 6: Final answer
    x = 101.42

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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.