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Finding the Fourth Proportional to 1,264.10, 1,744.52 and 696.97

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Solution

The fourth proportional to 1,264.10, 1,744.52 and 696.97 is: 961.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.10 : 1,744.52 = 696.97 : x
  2. Step 2: Convert to fraction form
    1,264.10/1,744.52 = 696.97/x
  3. Step 3: Cross multiply
    1,264.10x = 1,744.52 × 696.97
  4. Step 4: Simplify right side
    1,264.10x = 1,215,870.26
  5. Step 5: Solve for x
    x = 1,215,870.26/1,264.10
  6. Step 6: Final answer
    x = 961.84

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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.