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Finding the Fourth Proportional to 218.72, 327.98 and 96.82

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Solution

The fourth proportional to 218.72, 327.98 and 96.82 is: 145.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.72 : 327.98 = 96.82 : x
  2. Step 2: Convert to fraction form
    218.72/327.98 = 96.82/x
  3. Step 3: Cross multiply
    218.72x = 327.98 × 96.82
  4. Step 4: Simplify right side
    218.72x = 31,755.02
  5. Step 5: Solve for x
    x = 31,755.02/218.72
  6. Step 6: Final answer
    x = 145.19

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