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Finding the Fourth Proportional to 229.02, 343.29 and 91.98

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Solution

The fourth proportional to 229.02, 343.29 and 91.98 is: 137.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.02 : 343.29 = 91.98 : x
  2. Step 2: Convert to fraction form
    229.02/343.29 = 91.98/x
  3. Step 3: Cross multiply
    229.02x = 343.29 × 91.98
  4. Step 4: Simplify right side
    229.02x = 31,575.81
  5. Step 5: Solve for x
    x = 31,575.81/229.02
  6. Step 6: Final answer
    x = 137.87

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