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Finding the Fourth Proportional to 2,254.44, 3,381.88 and 611

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Solution

The fourth proportional to 2,254.44, 3,381.88 and 611 is: 916.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,254.44 : 3,381.88 = 611 : x
  2. Step 2: Convert to fraction form
    2,254.44/3,381.88 = 611/x
  3. Step 3: Cross multiply
    2,254.44x = 3,381.88 × 611
  4. Step 4: Simplify right side
    2,254.44x = 2,066,328.68
  5. Step 5: Solve for x
    x = 2,066,328.68/2,254.44
  6. Step 6: Final answer
    x = 916.56

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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.