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Finding the Fourth Proportional to 852.73, 1,279.50 and 441.79

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Solution

The fourth proportional to 852.73, 1,279.50 and 441.79 is: 662.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.73 : 1,279.50 = 441.79 : x
  2. Step 2: Convert to fraction form
    852.73/1,279.50 = 441.79/x
  3. Step 3: Cross multiply
    852.73x = 1,279.50 × 441.79
  4. Step 4: Simplify right side
    852.73x = 565,270.31
  5. Step 5: Solve for x
    x = 565,270.31/852.73
  6. Step 6: Final answer
    x = 662.89

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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.