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Finding the Fourth Proportional to 479.44, 717.72 and 449.44

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Solution

The fourth proportional to 479.44, 717.72 and 449.44 is: 672.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.44 : 717.72 = 449.44 : x
  2. Step 2: Convert to fraction form
    479.44/717.72 = 449.44/x
  3. Step 3: Cross multiply
    479.44x = 717.72 × 449.44
  4. Step 4: Simplify right side
    479.44x = 322,572.08
  5. Step 5: Solve for x
    x = 322,572.08/479.44
  6. Step 6: Final answer
    x = 672.81

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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.