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Finding the Fourth Proportional to 1,296.97, 1,955.03 and 1,221.73

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Solution

The fourth proportional to 1,296.97, 1,955.03 and 1,221.73 is: 1,841.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.97 : 1,955.03 = 1,221.73 : x
  2. Step 2: Convert to fraction form
    1,296.97/1,955.03 = 1,221.73/x
  3. Step 3: Cross multiply
    1,296.97x = 1,955.03 × 1,221.73
  4. Step 4: Simplify right side
    1,296.97x = 2,388,509.03
  5. Step 5: Solve for x
    x = 2,388,509.03/1,296.97
  6. Step 6: Final answer
    x = 1,841.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.