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Finding the Fourth Proportional to 229.87, 344.85 and 189.46

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Solution

The fourth proportional to 229.87, 344.85 and 189.46 is: 284.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.87 : 344.85 = 189.46 : x
  2. Step 2: Convert to fraction form
    229.87/344.85 = 189.46/x
  3. Step 3: Cross multiply
    229.87x = 344.85 × 189.46
  4. Step 4: Simplify right side
    229.87x = 65,335.28
  5. Step 5: Solve for x
    x = 65,335.28/229.87
  6. Step 6: Final answer
    x = 284.23

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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.