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Finding the Fourth Proportional to 204.32, 306.12 and 135.68

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Solution

The fourth proportional to 204.32, 306.12 and 135.68 is: 203.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.32 : 306.12 = 135.68 : x
  2. Step 2: Convert to fraction form
    204.32/306.12 = 135.68/x
  3. Step 3: Cross multiply
    204.32x = 306.12 × 135.68
  4. Step 4: Simplify right side
    204.32x = 41,534.36
  5. Step 5: Solve for x
    x = 41,534.36/204.32
  6. Step 6: Final answer
    x = 203.28

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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.