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Finding the Fourth Proportional to 1,092.83, 1,509.32 and 847.12

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Solution

The fourth proportional to 1,092.83, 1,509.32 and 847.12 is: 1,169.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092.83 : 1,509.32 = 847.12 : x
  2. Step 2: Convert to fraction form
    1,092.83/1,509.32 = 847.12/x
  3. Step 3: Cross multiply
    1,092.83x = 1,509.32 × 847.12
  4. Step 4: Simplify right side
    1,092.83x = 1,278,567.61
  5. Step 5: Solve for x
    x = 1,278,567.61/1,092.83
  6. Step 6: Final answer
    x = 1,169.97

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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.