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Finding the Fourth Proportional to 479.16, 714.22 and 426.83

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Solution

The fourth proportional to 479.16, 714.22 and 426.83 is: 636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.16 : 714.22 = 426.83 : x
  2. Step 2: Convert to fraction form
    479.16/714.22 = 426.83/x
  3. Step 3: Cross multiply
    479.16x = 714.22 × 426.83
  4. Step 4: Simplify right side
    479.16x = 304,845.88
  5. Step 5: Solve for x
    x = 304,845.88/479.16
  6. Step 6: Final answer
    x = 636.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.