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Finding the Fourth Proportional to 684.69, 1,027.10 and 273.73

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Solution

The fourth proportional to 684.69, 1,027.10 and 273.73 is: 410.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.69 : 1,027.10 = 273.73 : x
  2. Step 2: Convert to fraction form
    684.69/1,027.10 = 273.73/x
  3. Step 3: Cross multiply
    684.69x = 1,027.10 × 273.73
  4. Step 4: Simplify right side
    684.69x = 281,148.08
  5. Step 5: Solve for x
    x = 281,148.08/684.69
  6. Step 6: Final answer
    x = 410.62

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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.