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Finding the Fourth Proportional to 632.80, 949.08 and 307.96

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Solution

The fourth proportional to 632.80, 949.08 and 307.96 is: 461.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.80 : 949.08 = 307.96 : x
  2. Step 2: Convert to fraction form
    632.80/949.08 = 307.96/x
  3. Step 3: Cross multiply
    632.80x = 949.08 × 307.96
  4. Step 4: Simplify right side
    632.80x = 292,278.68
  5. Step 5: Solve for x
    x = 292,278.68/632.80
  6. Step 6: Final answer
    x = 461.88

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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.