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Finding the Fourth Proportional to 327.24, 490.86 and 240.36

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Solution

The fourth proportional to 327.24, 490.86 and 240.36 is: 360.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.24 : 490.86 = 240.36 : x
  2. Step 2: Convert to fraction form
    327.24/490.86 = 240.36/x
  3. Step 3: Cross multiply
    327.24x = 490.86 × 240.36
  4. Step 4: Simplify right side
    327.24x = 117,983.11
  5. Step 5: Solve for x
    x = 117,983.11/327.24
  6. Step 6: Final answer
    x = 360.54

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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.