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Finding the Fourth Proportional to 218.23, 327.33 and 55.91

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Solution

The fourth proportional to 218.23, 327.33 and 55.91 is: 83.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.23 : 327.33 = 55.91 : x
  2. Step 2: Convert to fraction form
    218.23/327.33 = 55.91/x
  3. Step 3: Cross multiply
    218.23x = 327.33 × 55.91
  4. Step 4: Simplify right side
    218.23x = 18,301.02
  5. Step 5: Solve for x
    x = 18,301.02/218.23
  6. Step 6: Final answer
    x = 83.86

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