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Finding the Fourth Proportional to 133.93, 201.12 and 82.90

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Solution

The fourth proportional to 133.93, 201.12 and 82.90 is: 124.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.93 : 201.12 = 82.90 : x
  2. Step 2: Convert to fraction form
    133.93/201.12 = 82.90/x
  3. Step 3: Cross multiply
    133.93x = 201.12 × 82.90
  4. Step 4: Simplify right side
    133.93x = 16,673.02
  5. Step 5: Solve for x
    x = 16,673.02/133.93
  6. Step 6: Final answer
    x = 124.49

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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.