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Finding the Fourth Proportional to 1,137.43, 1,706.42 and 1,028.96

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Solution

The fourth proportional to 1,137.43, 1,706.42 and 1,028.96 is: 1,543.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.43 : 1,706.42 = 1,028.96 : x
  2. Step 2: Convert to fraction form
    1,137.43/1,706.42 = 1,028.96/x
  3. Step 3: Cross multiply
    1,137.43x = 1,706.42 × 1,028.96
  4. Step 4: Simplify right side
    1,137.43x = 1,755,837.92
  5. Step 5: Solve for x
    x = 1,755,837.92/1,137.43
  6. Step 6: Final answer
    x = 1,543.69

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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.