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Finding the Fourth Proportional to 496.62, 685.26 and 319.71

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Solution

The fourth proportional to 496.62, 685.26 and 319.71 is: 441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.62 : 685.26 = 319.71 : x
  2. Step 2: Convert to fraction form
    496.62/685.26 = 319.71/x
  3. Step 3: Cross multiply
    496.62x = 685.26 × 319.71
  4. Step 4: Simplify right side
    496.62x = 219,084.47
  5. Step 5: Solve for x
    x = 219,084.47/496.62
  6. Step 6: Final answer
    x = 441.15

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