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Finding the Fourth Proportional to 479.24, 660.92 and 329.79

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Solution

The fourth proportional to 479.24, 660.92 and 329.79 is: 454.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.24 : 660.92 = 329.79 : x
  2. Step 2: Convert to fraction form
    479.24/660.92 = 329.79/x
  3. Step 3: Cross multiply
    479.24x = 660.92 × 329.79
  4. Step 4: Simplify right side
    479.24x = 217,964.81
  5. Step 5: Solve for x
    x = 217,964.81/479.24
  6. Step 6: Final answer
    x = 454.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.