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Finding the Fourth Proportional to 489, 674.88 and 334.08

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Solution

The fourth proportional to 489, 674.88 and 334.08 is: 461.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    489 : 674.88 = 334.08 : x
  2. Step 2: Convert to fraction form
    489/674.88 = 334.08/x
  3. Step 3: Cross multiply
    489x = 674.88 × 334.08
  4. Step 4: Simplify right side
    489x = 225,463.91
  5. Step 5: Solve for x
    x = 225,463.91/489
  6. Step 6: Final answer
    x = 461.07

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