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Finding the Fourth Proportional to 1,489.78, 2,234.04 and 796.31

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Solution

The fourth proportional to 1,489.78, 2,234.04 and 796.31 is: 1,194.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.78 : 2,234.04 = 796.31 : x
  2. Step 2: Convert to fraction form
    1,489.78/2,234.04 = 796.31/x
  3. Step 3: Cross multiply
    1,489.78x = 2,234.04 × 796.31
  4. Step 4: Simplify right side
    1,489.78x = 1,778,988.39
  5. Step 5: Solve for x
    x = 1,778,988.39/1,489.78
  6. Step 6: Final answer
    x = 1,194.13

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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.