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Finding the Fourth Proportional to 198.22, 297.28 and 76.48

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Solution

The fourth proportional to 198.22, 297.28 and 76.48 is: 114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.22 : 297.28 = 76.48 : x
  2. Step 2: Convert to fraction form
    198.22/297.28 = 76.48/x
  3. Step 3: Cross multiply
    198.22x = 297.28 × 76.48
  4. Step 4: Simplify right side
    198.22x = 22,735.97
  5. Step 5: Solve for x
    x = 22,735.97/198.22
  6. Step 6: Final answer
    x = 114.70

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