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Finding the Fourth Proportional to 351.52, 485.12 and 196.28

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Solution

The fourth proportional to 351.52, 485.12 and 196.28 is: 270.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.52 : 485.12 = 196.28 : x
  2. Step 2: Convert to fraction form
    351.52/485.12 = 196.28/x
  3. Step 3: Cross multiply
    351.52x = 485.12 × 196.28
  4. Step 4: Simplify right side
    351.52x = 95,219.35
  5. Step 5: Solve for x
    x = 95,219.35/351.52
  6. Step 6: Final answer
    x = 270.88

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