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Finding the Fourth Proportional to 853.86, 1,179.71 and 743.29

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Solution

The fourth proportional to 853.86, 1,179.71 and 743.29 is: 1,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.86 : 1,179.71 = 743.29 : x
  2. Step 2: Convert to fraction form
    853.86/1,179.71 = 743.29/x
  3. Step 3: Cross multiply
    853.86x = 1,179.71 × 743.29
  4. Step 4: Simplify right side
    853.86x = 876,866.65
  5. Step 5: Solve for x
    x = 876,866.65/853.86
  6. Step 6: Final answer
    x = 1,026.94

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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.