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Finding the Fourth Proportional to 352.41, 485.96 and 271.61

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Solution

The fourth proportional to 352.41, 485.96 and 271.61 is: 374.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.41 : 485.96 = 271.61 : x
  2. Step 2: Convert to fraction form
    352.41/485.96 = 271.61/x
  3. Step 3: Cross multiply
    352.41x = 485.96 × 271.61
  4. Step 4: Simplify right side
    352.41x = 131,991.60
  5. Step 5: Solve for x
    x = 131,991.60/352.41
  6. Step 6: Final answer
    x = 374.54

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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.