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Finding the Fourth Proportional to 1,255.94, 1,733.13 and 696.36

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Solution

The fourth proportional to 1,255.94, 1,733.13 and 696.36 is: 960.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.94 : 1,733.13 = 696.36 : x
  2. Step 2: Convert to fraction form
    1,255.94/1,733.13 = 696.36/x
  3. Step 3: Cross multiply
    1,255.94x = 1,733.13 × 696.36
  4. Step 4: Simplify right side
    1,255.94x = 1,206,882.41
  5. Step 5: Solve for x
    x = 1,206,882.41/1,255.94
  6. Step 6: Final answer
    x = 960.94

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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.