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Finding the Fourth Proportional to 198.07, 273.34 and 110.74

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Solution

The fourth proportional to 198.07, 273.34 and 110.74 is: 152.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.07 : 273.34 = 110.74 : x
  2. Step 2: Convert to fraction form
    198.07/273.34 = 110.74/x
  3. Step 3: Cross multiply
    198.07x = 273.34 × 110.74
  4. Step 4: Simplify right side
    198.07x = 30,269.67
  5. Step 5: Solve for x
    x = 30,269.67/198.07
  6. Step 6: Final answer
    x = 152.82

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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.