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Finding the Fourth Proportional to 243.36, 335.46 and 204

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Solution

The fourth proportional to 243.36, 335.46 and 204 is: 281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.36 : 335.46 = 204 : x
  2. Step 2: Convert to fraction form
    243.36/335.46 = 204/x
  3. Step 3: Cross multiply
    243.36x = 335.46 × 204
  4. Step 4: Simplify right side
    243.36x = 68,433.84
  5. Step 5: Solve for x
    x = 68,433.84/243.36
  6. Step 6: Final answer
    x = 281.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.