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Finding the Fourth Proportional to 2,255.67, 3,383.04 and 868.53

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Solution

The fourth proportional to 2,255.67, 3,383.04 and 868.53 is: 1,302.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.67 : 3,383.04 = 868.53 : x
  2. Step 2: Convert to fraction form
    2,255.67/3,383.04 = 868.53/x
  3. Step 3: Cross multiply
    2,255.67x = 3,383.04 × 868.53
  4. Step 4: Simplify right side
    2,255.67x = 2,938,271.73
  5. Step 5: Solve for x
    x = 2,938,271.73/2,255.67
  6. Step 6: Final answer
    x = 1,302.62

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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.