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Finding the Fourth Proportional to 1,103.67, 1,652.67 and 843.93

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Solution

The fourth proportional to 1,103.67, 1,652.67 and 843.93 is: 1,263.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.67 : 1,652.67 = 843.93 : x
  2. Step 2: Convert to fraction form
    1,103.67/1,652.67 = 843.93/x
  3. Step 3: Cross multiply
    1,103.67x = 1,652.67 × 843.93
  4. Step 4: Simplify right side
    1,103.67x = 1,394,737.79
  5. Step 5: Solve for x
    x = 1,394,737.79/1,103.67
  6. Step 6: Final answer
    x = 1,263.73

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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.