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Finding the Fourth Proportional to 479.75, 662.60 and 324.23

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Solution

The fourth proportional to 479.75, 662.60 and 324.23 is: 447.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.75 : 662.60 = 324.23 : x
  2. Step 2: Convert to fraction form
    479.75/662.60 = 324.23/x
  3. Step 3: Cross multiply
    479.75x = 662.60 × 324.23
  4. Step 4: Simplify right side
    479.75x = 214,833.18
  5. Step 5: Solve for x
    x = 214,833.18/479.75
  6. Step 6: Final answer
    x = 447.80

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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.