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Finding the Fourth Proportional to 664.12, 997.29 and 499.60

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Solution

The fourth proportional to 664.12, 997.29 and 499.60 is: 750.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.12 : 997.29 = 499.60 : x
  2. Step 2: Convert to fraction form
    664.12/997.29 = 499.60/x
  3. Step 3: Cross multiply
    664.12x = 997.29 × 499.60
  4. Step 4: Simplify right side
    664.12x = 498,246.08
  5. Step 5: Solve for x
    x = 498,246.08/664.12
  6. Step 6: Final answer
    x = 750.24

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