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Finding the Fourth Proportional to 135.98, 203.97 and 109.25

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Solution

The fourth proportional to 135.98, 203.97 and 109.25 is: 163.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.98 : 203.97 = 109.25 : x
  2. Step 2: Convert to fraction form
    135.98/203.97 = 109.25/x
  3. Step 3: Cross multiply
    135.98x = 203.97 × 109.25
  4. Step 4: Simplify right side
    135.98x = 22,283.72
  5. Step 5: Solve for x
    x = 22,283.72/135.98
  6. Step 6: Final answer
    x = 163.88

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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.