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Finding the Fourth Proportional to 134.42, 201.15 and 82.18

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Solution

The fourth proportional to 134.42, 201.15 and 82.18 is: 122.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.42 : 201.15 = 82.18 : x
  2. Step 2: Convert to fraction form
    134.42/201.15 = 82.18/x
  3. Step 3: Cross multiply
    134.42x = 201.15 × 82.18
  4. Step 4: Simplify right side
    134.42x = 16,530.00
  5. Step 5: Solve for x
    x = 16,530.00/134.42
  6. Step 6: Final answer
    x = 122.97

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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.