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Finding the Fourth Proportional to 626.20, 939.28 and 301.60

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Solution

The fourth proportional to 626.20, 939.28 and 301.60 is: 452.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.20 : 939.28 = 301.60 : x
  2. Step 2: Convert to fraction form
    626.20/939.28 = 301.60/x
  3. Step 3: Cross multiply
    626.20x = 939.28 × 301.60
  4. Step 4: Simplify right side
    626.20x = 283,286.85
  5. Step 5: Solve for x
    x = 283,286.85/626.20
  6. Step 6: Final answer
    x = 452.39

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.