Home / 1,226.50-1,839.75-360.80

Finding the Fourth Proportional to 1,226.50, 1,839.75 and 360.80

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Solution

The fourth proportional to 1,226.50, 1,839.75 and 360.80 is: 541.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.50 : 1,839.75 = 360.80 : x
  2. Step 2: Convert to fraction form
    1,226.50/1,839.75 = 360.80/x
  3. Step 3: Cross multiply
    1,226.50x = 1,839.75 × 360.80
  4. Step 4: Simplify right side
    1,226.50x = 663,781.80
  5. Step 5: Solve for x
    x = 663,781.80/1,226.50
  6. Step 6: Final answer
    x = 541.20

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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.