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Finding the Fourth Proportional to 636.43, 877.53 and 426.24

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Solution

The fourth proportional to 636.43, 877.53 and 426.24 is: 587.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.43 : 877.53 = 426.24 : x
  2. Step 2: Convert to fraction form
    636.43/877.53 = 426.24/x
  3. Step 3: Cross multiply
    636.43x = 877.53 × 426.24
  4. Step 4: Simplify right side
    636.43x = 374,037.52
  5. Step 5: Solve for x
    x = 374,037.52/636.43
  6. Step 6: Final answer
    x = 587.71

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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.