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Finding the Fourth Proportional to 327.24, 490.62 and 164.81

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Solution

The fourth proportional to 327.24, 490.62 and 164.81 is: 247.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.24 : 490.62 = 164.81 : x
  2. Step 2: Convert to fraction form
    327.24/490.62 = 164.81/x
  3. Step 3: Cross multiply
    327.24x = 490.62 × 164.81
  4. Step 4: Simplify right side
    327.24x = 80,859.08
  5. Step 5: Solve for x
    x = 80,859.08/327.24
  6. Step 6: Final answer
    x = 247.09

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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.