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Finding the Fourth Proportional to 243.20, 364.28 and 229.84

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Solution

The fourth proportional to 243.20, 364.28 and 229.84 is: 344.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.20 : 364.28 = 229.84 : x
  2. Step 2: Convert to fraction form
    243.20/364.28 = 229.84/x
  3. Step 3: Cross multiply
    243.20x = 364.28 × 229.84
  4. Step 4: Simplify right side
    243.20x = 83,726.12
  5. Step 5: Solve for x
    x = 83,726.12/243.20
  6. Step 6: Final answer
    x = 344.27

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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.