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Finding the Fourth Proportional to 727.91, 1,004.50 and 396.33

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Solution

The fourth proportional to 727.91, 1,004.50 and 396.33 is: 546.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.91 : 1,004.50 = 396.33 : x
  2. Step 2: Convert to fraction form
    727.91/1,004.50 = 396.33/x
  3. Step 3: Cross multiply
    727.91x = 1,004.50 × 396.33
  4. Step 4: Simplify right side
    727.91x = 398,115.86
  5. Step 5: Solve for x
    x = 398,115.86/727.91
  6. Step 6: Final answer
    x = 546.93

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