Home / 1,226.46-1,839.80-393.55

Finding the Fourth Proportional to 1,226.46, 1,839.80 and 393.55

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Solution

The fourth proportional to 1,226.46, 1,839.80 and 393.55 is: 590.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.46 : 1,839.80 = 393.55 : x
  2. Step 2: Convert to fraction form
    1,226.46/1,839.80 = 393.55/x
  3. Step 3: Cross multiply
    1,226.46x = 1,839.80 × 393.55
  4. Step 4: Simplify right side
    1,226.46x = 724,049.67
  5. Step 5: Solve for x
    x = 724,049.67/1,226.46
  6. Step 6: Final answer
    x = 590.36

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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.