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Finding the Fourth Proportional to 133.73, 200.28 and 103.05

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Solution

The fourth proportional to 133.73, 200.28 and 103.05 is: 154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.73 : 200.28 = 103.05 : x
  2. Step 2: Convert to fraction form
    133.73/200.28 = 103.05/x
  3. Step 3: Cross multiply
    133.73x = 200.28 × 103.05
  4. Step 4: Simplify right side
    133.73x = 20,638.85
  5. Step 5: Solve for x
    x = 20,638.85/133.73
  6. Step 6: Final answer
    x = 154.33

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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.