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Finding the Fourth Proportional to 794.48, 1,190.71 and 696.78

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Solution

The fourth proportional to 794.48, 1,190.71 and 696.78 is: 1,044.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.48 : 1,190.71 = 696.78 : x
  2. Step 2: Convert to fraction form
    794.48/1,190.71 = 696.78/x
  3. Step 3: Cross multiply
    794.48x = 1,190.71 × 696.78
  4. Step 4: Simplify right side
    794.48x = 829,662.91
  5. Step 5: Solve for x
    x = 829,662.91/794.48
  6. Step 6: Final answer
    x = 1,044.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.