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Finding the Fourth Proportional to 327.35, 490.67 and 144.72

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Solution

The fourth proportional to 327.35, 490.67 and 144.72 is: 216.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.35 : 490.67 = 144.72 : x
  2. Step 2: Convert to fraction form
    327.35/490.67 = 144.72/x
  3. Step 3: Cross multiply
    327.35x = 490.67 × 144.72
  4. Step 4: Simplify right side
    327.35x = 71,009.76
  5. Step 5: Solve for x
    x = 71,009.76/327.35
  6. Step 6: Final answer
    x = 216.92

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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.