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Finding the Fourth Proportional to 1,268.71, 1,750.85 and 796.63

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Solution

The fourth proportional to 1,268.71, 1,750.85 and 796.63 is: 1,099.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.71 : 1,750.85 = 796.63 : x
  2. Step 2: Convert to fraction form
    1,268.71/1,750.85 = 796.63/x
  3. Step 3: Cross multiply
    1,268.71x = 1,750.85 × 796.63
  4. Step 4: Simplify right side
    1,268.71x = 1,394,779.64
  5. Step 5: Solve for x
    x = 1,394,779.64/1,268.71
  6. Step 6: Final answer
    x = 1,099.37

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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.