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Finding the Fourth Proportional to 203.70, 281.19 and 130.02

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Solution

The fourth proportional to 203.70, 281.19 and 130.02 is: 179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.70 : 281.19 = 130.02 : x
  2. Step 2: Convert to fraction form
    203.70/281.19 = 130.02/x
  3. Step 3: Cross multiply
    203.70x = 281.19 × 130.02
  4. Step 4: Simplify right side
    203.70x = 36,560.32
  5. Step 5: Solve for x
    x = 36,560.32/203.70
  6. Step 6: Final answer
    x = 179.48

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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.