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Finding the Fourth Proportional to 626.42, 939.39 and 369.62

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Solution

The fourth proportional to 626.42, 939.39 and 369.62 is: 554.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.42 : 939.39 = 369.62 : x
  2. Step 2: Convert to fraction form
    626.42/939.39 = 369.62/x
  3. Step 3: Cross multiply
    626.42x = 939.39 × 369.62
  4. Step 4: Simplify right side
    626.42x = 347,217.33
  5. Step 5: Solve for x
    x = 347,217.33/626.42
  6. Step 6: Final answer
    x = 554.29

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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.