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Finding the Fourth Proportional to 133.76, 200.64 and 103.37

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Solution

The fourth proportional to 133.76, 200.64 and 103.37 is: 155.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.76 : 200.64 = 103.37 : x
  2. Step 2: Convert to fraction form
    133.76/200.64 = 103.37/x
  3. Step 3: Cross multiply
    133.76x = 200.64 × 103.37
  4. Step 4: Simplify right side
    133.76x = 20,740.16
  5. Step 5: Solve for x
    x = 20,740.16/133.76
  6. Step 6: Final answer
    x = 155.06

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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.