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Finding the Fourth Proportional to 221.56, 331.80 and 134.94

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Solution

The fourth proportional to 221.56, 331.80 and 134.94 is: 202.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.56 : 331.80 = 134.94 : x
  2. Step 2: Convert to fraction form
    221.56/331.80 = 134.94/x
  3. Step 3: Cross multiply
    221.56x = 331.80 × 134.94
  4. Step 4: Simplify right side
    221.56x = 44,773.09
  5. Step 5: Solve for x
    x = 44,773.09/221.56
  6. Step 6: Final answer
    x = 202.08

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