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Finding the Fourth Proportional to 2,242.26, 3,361.07 and 855.22

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Solution

The fourth proportional to 2,242.26, 3,361.07 and 855.22 is: 1,281.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,242.26 : 3,361.07 = 855.22 : x
  2. Step 2: Convert to fraction form
    2,242.26/3,361.07 = 855.22/x
  3. Step 3: Cross multiply
    2,242.26x = 3,361.07 × 855.22
  4. Step 4: Simplify right side
    2,242.26x = 2,874,450.01
  5. Step 5: Solve for x
    x = 2,874,450.01/2,242.26
  6. Step 6: Final answer
    x = 1,281.95

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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.