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Finding the Fourth Proportional to 632.89, 948.68 and 426.97

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Solution

The fourth proportional to 632.89, 948.68 and 426.97 is: 640.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.89 : 948.68 = 426.97 : x
  2. Step 2: Convert to fraction form
    632.89/948.68 = 426.97/x
  3. Step 3: Cross multiply
    632.89x = 948.68 × 426.97
  4. Step 4: Simplify right side
    632.89x = 405,057.90
  5. Step 5: Solve for x
    x = 405,057.90/632.89
  6. Step 6: Final answer
    x = 640.01

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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.