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Finding the Fourth Proportional to 352.66, 486.67 and 197.41

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Solution

The fourth proportional to 352.66, 486.67 and 197.41 is: 272.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.66 : 486.67 = 197.41 : x
  2. Step 2: Convert to fraction form
    352.66/486.67 = 197.41/x
  3. Step 3: Cross multiply
    352.66x = 486.67 × 197.41
  4. Step 4: Simplify right side
    352.66x = 96,073.52
  5. Step 5: Solve for x
    x = 96,073.52/352.66
  6. Step 6: Final answer
    x = 272.43

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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.