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Finding the Fourth Proportional to 1,636.70, 2,454.62 and 814.37

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Solution

The fourth proportional to 1,636.70, 2,454.62 and 814.37 is: 1,221.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.70 : 2,454.62 = 814.37 : x
  2. Step 2: Convert to fraction form
    1,636.70/2,454.62 = 814.37/x
  3. Step 3: Cross multiply
    1,636.70x = 2,454.62 × 814.37
  4. Step 4: Simplify right side
    1,636.70x = 1,998,952.54
  5. Step 5: Solve for x
    x = 1,998,952.54/1,636.70
  6. Step 6: Final answer
    x = 1,221.33

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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.