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Finding the Fourth Proportional to 634.10, 949.32 and 479.12

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Solution

The fourth proportional to 634.10, 949.32 and 479.12 is: 717.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.10 : 949.32 = 479.12 : x
  2. Step 2: Convert to fraction form
    634.10/949.32 = 479.12/x
  3. Step 3: Cross multiply
    634.10x = 949.32 × 479.12
  4. Step 4: Simplify right side
    634.10x = 454,833.45
  5. Step 5: Solve for x
    x = 454,833.45/634.10
  6. Step 6: Final answer
    x = 717.30

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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.