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Finding the Fourth Proportional to 1,226.43, 1,839.43 and 348.99

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Solution

The fourth proportional to 1,226.43, 1,839.43 and 348.99 is: 523.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.43 : 1,839.43 = 348.99 : x
  2. Step 2: Convert to fraction form
    1,226.43/1,839.43 = 348.99/x
  3. Step 3: Cross multiply
    1,226.43x = 1,839.43 × 348.99
  4. Step 4: Simplify right side
    1,226.43x = 641,942.68
  5. Step 5: Solve for x
    x = 641,942.68/1,226.43
  6. Step 6: Final answer
    x = 523.42

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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.