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Finding the Fourth Proportional to 794.38, 1,190.34 and 672.88

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Solution

The fourth proportional to 794.38, 1,190.34 and 672.88 is: 1,008.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.38 : 1,190.34 = 672.88 : x
  2. Step 2: Convert to fraction form
    794.38/1,190.34 = 672.88/x
  3. Step 3: Cross multiply
    794.38x = 1,190.34 × 672.88
  4. Step 4: Simplify right side
    794.38x = 800,955.98
  5. Step 5: Solve for x
    x = 800,955.98/794.38
  6. Step 6: Final answer
    x = 1,008.28

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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.