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Finding the Fourth Proportional to 262.96, 394.42 and 160.23

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Solution

The fourth proportional to 262.96, 394.42 and 160.23 is: 240.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.96 : 394.42 = 160.23 : x
  2. Step 2: Convert to fraction form
    262.96/394.42 = 160.23/x
  3. Step 3: Cross multiply
    262.96x = 394.42 × 160.23
  4. Step 4: Simplify right side
    262.96x = 63,197.92
  5. Step 5: Solve for x
    x = 63,197.92/262.96
  6. Step 6: Final answer
    x = 240.33

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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.