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Finding the Fourth Proportional to 133.67, 200.81 and 108.16

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Solution

The fourth proportional to 133.67, 200.81 and 108.16 is: 162.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.67 : 200.81 = 108.16 : x
  2. Step 2: Convert to fraction form
    133.67/200.81 = 108.16/x
  3. Step 3: Cross multiply
    133.67x = 200.81 × 108.16
  4. Step 4: Simplify right side
    133.67x = 21,719.38
  5. Step 5: Solve for x
    x = 21,719.38/133.67
  6. Step 6: Final answer
    x = 162.48

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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.