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Finding the Fourth Proportional to 794.22, 1,191.33 and 274.24

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Solution

The fourth proportional to 794.22, 1,191.33 and 274.24 is: 411.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.22 : 1,191.33 = 274.24 : x
  2. Step 2: Convert to fraction form
    794.22/1,191.33 = 274.24/x
  3. Step 3: Cross multiply
    794.22x = 1,191.33 × 274.24
  4. Step 4: Simplify right side
    794.22x = 326,710.34
  5. Step 5: Solve for x
    x = 326,710.34/794.22
  6. Step 6: Final answer
    x = 411.36

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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.