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Finding the Fourth Proportional to 497.05, 685.71 and 349.78

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Solution

The fourth proportional to 497.05, 685.71 and 349.78 is: 482.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.05 : 685.71 = 349.78 : x
  2. Step 2: Convert to fraction form
    497.05/685.71 = 349.78/x
  3. Step 3: Cross multiply
    497.05x = 685.71 × 349.78
  4. Step 4: Simplify right side
    497.05x = 239,847.64
  5. Step 5: Solve for x
    x = 239,847.64/497.05
  6. Step 6: Final answer
    x = 482.54

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