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Finding the Fourth Proportional to 197.92, 273.09 and 120.25

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Solution

The fourth proportional to 197.92, 273.09 and 120.25 is: 165.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.92 : 273.09 = 120.25 : x
  2. Step 2: Convert to fraction form
    197.92/273.09 = 120.25/x
  3. Step 3: Cross multiply
    197.92x = 273.09 × 120.25
  4. Step 4: Simplify right side
    197.92x = 32,839.07
  5. Step 5: Solve for x
    x = 32,839.07/197.92
  6. Step 6: Final answer
    x = 165.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.