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Finding the Fourth Proportional to 131.35, 198.01 and 122.54

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Solution

The fourth proportional to 131.35, 198.01 and 122.54 is: 184.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.35 : 198.01 = 122.54 : x
  2. Step 2: Convert to fraction form
    131.35/198.01 = 122.54/x
  3. Step 3: Cross multiply
    131.35x = 198.01 × 122.54
  4. Step 4: Simplify right side
    131.35x = 24,264.15
  5. Step 5: Solve for x
    x = 24,264.15/131.35
  6. Step 6: Final answer
    x = 184.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.