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Finding the Fourth Proportional to 489.74, 733.77 and 306.72

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Solution

The fourth proportional to 489.74, 733.77 and 306.72 is: 459.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.74 : 733.77 = 306.72 : x
  2. Step 2: Convert to fraction form
    489.74/733.77 = 306.72/x
  3. Step 3: Cross multiply
    489.74x = 733.77 × 306.72
  4. Step 4: Simplify right side
    489.74x = 225,061.93
  5. Step 5: Solve for x
    x = 225,061.93/489.74
  6. Step 6: Final answer
    x = 459.56

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