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Finding the Fourth Proportional to 626.80, 939.99 and 301.96

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Solution

The fourth proportional to 626.80, 939.99 and 301.96 is: 452.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.80 : 939.99 = 301.96 : x
  2. Step 2: Convert to fraction form
    626.80/939.99 = 301.96/x
  3. Step 3: Cross multiply
    626.80x = 939.99 × 301.96
  4. Step 4: Simplify right side
    626.80x = 283,839.38
  5. Step 5: Solve for x
    x = 283,839.38/626.80
  6. Step 6: Final answer
    x = 452.84

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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.