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Finding the Fourth Proportional to 634.52, 950.80 and 439.90

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Solution

The fourth proportional to 634.52, 950.80 and 439.90 is: 659.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.52 : 950.80 = 439.90 : x
  2. Step 2: Convert to fraction form
    634.52/950.80 = 439.90/x
  3. Step 3: Cross multiply
    634.52x = 950.80 × 439.90
  4. Step 4: Simplify right side
    634.52x = 418,259.30
  5. Step 5: Solve for x
    x = 418,259.30/634.52
  6. Step 6: Final answer
    x = 659.17

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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.