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Finding the Fourth Proportional to 624.09, 935.30 and 331.55

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Solution

The fourth proportional to 624.09, 935.30 and 331.55 is: 496.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.09 : 935.30 = 331.55 : x
  2. Step 2: Convert to fraction form
    624.09/935.30 = 331.55/x
  3. Step 3: Cross multiply
    624.09x = 935.30 × 331.55
  4. Step 4: Simplify right side
    624.09x = 310,092.38
  5. Step 5: Solve for x
    x = 310,092.38/624.09
  6. Step 6: Final answer
    x = 496.87

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