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Finding the Fourth Proportional to 479.43, 659.18 and 426.47

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Solution

The fourth proportional to 479.43, 659.18 and 426.47 is: 586.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.43 : 659.18 = 426.47 : x
  2. Step 2: Convert to fraction form
    479.43/659.18 = 426.47/x
  3. Step 3: Cross multiply
    479.43x = 659.18 × 426.47
  4. Step 4: Simplify right side
    479.43x = 281,115.27
  5. Step 5: Solve for x
    x = 281,115.27/479.43
  6. Step 6: Final answer
    x = 586.35

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.