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Finding the Fourth Proportional to 203.68, 281.04 and 196.96

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Solution

The fourth proportional to 203.68, 281.04 and 196.96 is: 271.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.68 : 281.04 = 196.96 : x
  2. Step 2: Convert to fraction form
    203.68/281.04 = 196.96/x
  3. Step 3: Cross multiply
    203.68x = 281.04 × 196.96
  4. Step 4: Simplify right side
    203.68x = 55,353.64
  5. Step 5: Solve for x
    x = 55,353.64/203.68
  6. Step 6: Final answer
    x = 271.77

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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.