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Finding the Fourth Proportional to 203.82, 281.35 and 159.45

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Solution

The fourth proportional to 203.82, 281.35 and 159.45 is: 220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.82 : 281.35 = 159.45 : x
  2. Step 2: Convert to fraction form
    203.82/281.35 = 159.45/x
  3. Step 3: Cross multiply
    203.82x = 281.35 × 159.45
  4. Step 4: Simplify right side
    203.82x = 44,861.26
  5. Step 5: Solve for x
    x = 44,861.26/203.82
  6. Step 6: Final answer
    x = 220.10

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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.