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Finding the Fourth Proportional to 635.85, 949.12 and 634.23

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Solution

The fourth proportional to 635.85, 949.12 and 634.23 is: 946.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.85 : 949.12 = 634.23 : x
  2. Step 2: Convert to fraction form
    635.85/949.12 = 634.23/x
  3. Step 3: Cross multiply
    635.85x = 949.12 × 634.23
  4. Step 4: Simplify right side
    635.85x = 601,958.79
  5. Step 5: Solve for x
    x = 601,958.79/635.85
  6. Step 6: Final answer
    x = 946.70

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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.