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Finding the Fourth Proportional to 479.57, 662.22 and 454.97

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Solution

The fourth proportional to 479.57, 662.22 and 454.97 is: 628.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.57 : 662.22 = 454.97 : x
  2. Step 2: Convert to fraction form
    479.57/662.22 = 454.97/x
  3. Step 3: Cross multiply
    479.57x = 662.22 × 454.97
  4. Step 4: Simplify right side
    479.57x = 301,286.92
  5. Step 5: Solve for x
    x = 301,286.92/479.57
  6. Step 6: Final answer
    x = 628.25

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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.