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Finding the Fourth Proportional to 1,264.82, 1,743.22 and 969.57

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Solution

The fourth proportional to 1,264.82, 1,743.22 and 969.57 is: 1,336.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.82 : 1,743.22 = 969.57 : x
  2. Step 2: Convert to fraction form
    1,264.82/1,743.22 = 969.57/x
  3. Step 3: Cross multiply
    1,264.82x = 1,743.22 × 969.57
  4. Step 4: Simplify right side
    1,264.82x = 1,690,175.03
  5. Step 5: Solve for x
    x = 1,690,175.03/1,264.82
  6. Step 6: Final answer
    x = 1,336.30

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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.