Home / 1,226.46-1,839.85-360.78

Finding the Fourth Proportional to 1,226.46, 1,839.85 and 360.78

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Solution

The fourth proportional to 1,226.46, 1,839.85 and 360.78 is: 541.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.46 : 1,839.85 = 360.78 : x
  2. Step 2: Convert to fraction form
    1,226.46/1,839.85 = 360.78/x
  3. Step 3: Cross multiply
    1,226.46x = 1,839.85 × 360.78
  4. Step 4: Simplify right side
    1,226.46x = 663,781.08
  5. Step 5: Solve for x
    x = 663,781.08/1,226.46
  6. Step 6: Final answer
    x = 541.22

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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.