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Finding the Fourth Proportional to 351.63, 485.30 and 196.41

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Solution

The fourth proportional to 351.63, 485.30 and 196.41 is: 271.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.63 : 485.30 = 196.41 : x
  2. Step 2: Convert to fraction form
    351.63/485.30 = 196.41/x
  3. Step 3: Cross multiply
    351.63x = 485.30 × 196.41
  4. Step 4: Simplify right side
    351.63x = 95,316.79
  5. Step 5: Solve for x
    x = 95,316.79/351.63
  6. Step 6: Final answer
    x = 271.07

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