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Finding the Fourth Proportional to 1,092.93, 1,508.26 and 620.85

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Solution

The fourth proportional to 1,092.93, 1,508.26 and 620.85 is: 856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092.93 : 1,508.26 = 620.85 : x
  2. Step 2: Convert to fraction form
    1,092.93/1,508.26 = 620.85/x
  3. Step 3: Cross multiply
    1,092.93x = 1,508.26 × 620.85
  4. Step 4: Simplify right side
    1,092.93x = 936,403.22
  5. Step 5: Solve for x
    x = 936,403.22/1,092.93
  6. Step 6: Final answer
    x = 856.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.