Home / 1,226.30-1,839.72-404.55

Finding the Fourth Proportional to 1,226.30, 1,839.72 and 404.55

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Solution

The fourth proportional to 1,226.30, 1,839.72 and 404.55 is: 606.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.30 : 1,839.72 = 404.55 : x
  2. Step 2: Convert to fraction form
    1,226.30/1,839.72 = 404.55/x
  3. Step 3: Cross multiply
    1,226.30x = 1,839.72 × 404.55
  4. Step 4: Simplify right side
    1,226.30x = 744,258.73
  5. Step 5: Solve for x
    x = 744,258.73/1,226.30
  6. Step 6: Final answer
    x = 606.92

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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.