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Finding the Fourth Proportional to 1,226.59, 1,839.18 and 404.80

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Solution

The fourth proportional to 1,226.59, 1,839.18 and 404.80 is: 606.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.59 : 1,839.18 = 404.80 : x
  2. Step 2: Convert to fraction form
    1,226.59/1,839.18 = 404.80/x
  3. Step 3: Cross multiply
    1,226.59x = 1,839.18 × 404.80
  4. Step 4: Simplify right side
    1,226.59x = 744,500.06
  5. Step 5: Solve for x
    x = 744,500.06/1,226.59
  6. Step 6: Final answer
    x = 606.97

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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.