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Finding the Fourth Proportional to 494.70, 682.70 and 273.65

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Solution

The fourth proportional to 494.70, 682.70 and 273.65 is: 377.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.70 : 682.70 = 273.65 : x
  2. Step 2: Convert to fraction form
    494.70/682.70 = 273.65/x
  3. Step 3: Cross multiply
    494.70x = 682.70 × 273.65
  4. Step 4: Simplify right side
    494.70x = 186,819.66
  5. Step 5: Solve for x
    x = 186,819.66/494.70
  6. Step 6: Final answer
    x = 377.64

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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.