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Finding the Fourth Proportional to 327.27, 489.75 and 240.40

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Solution

The fourth proportional to 327.27, 489.75 and 240.40 is: 359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.27 : 489.75 = 240.40 : x
  2. Step 2: Convert to fraction form
    327.27/489.75 = 240.40/x
  3. Step 3: Cross multiply
    327.27x = 489.75 × 240.40
  4. Step 4: Simplify right side
    327.27x = 117,735.61
  5. Step 5: Solve for x
    x = 117,735.61/327.27
  6. Step 6: Final answer
    x = 359.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.