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Finding the Fourth Proportional to 499.21, 748.16 and 344.89

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Solution

The fourth proportional to 499.21, 748.16 and 344.89 is: 516.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.21 : 748.16 = 344.89 : x
  2. Step 2: Convert to fraction form
    499.21/748.16 = 344.89/x
  3. Step 3: Cross multiply
    499.21x = 748.16 × 344.89
  4. Step 4: Simplify right side
    499.21x = 258,029.16
  5. Step 5: Solve for x
    x = 258,029.16/499.21
  6. Step 6: Final answer
    x = 516.88

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