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Finding the Fourth Proportional to 636.78, 955.37 and 441.97

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Solution

The fourth proportional to 636.78, 955.37 and 441.97 is: 663.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.78 : 955.37 = 441.97 : x
  2. Step 2: Convert to fraction form
    636.78/955.37 = 441.97/x
  3. Step 3: Cross multiply
    636.78x = 955.37 × 441.97
  4. Step 4: Simplify right side
    636.78x = 422,244.88
  5. Step 5: Solve for x
    x = 422,244.88/636.78
  6. Step 6: Final answer
    x = 663.09

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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.