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Finding the Fourth Proportional to 352.25, 486.05 and 204.90

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Solution

The fourth proportional to 352.25, 486.05 and 204.90 is: 282.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.25 : 486.05 = 204.90 : x
  2. Step 2: Convert to fraction form
    352.25/486.05 = 204.90/x
  3. Step 3: Cross multiply
    352.25x = 486.05 × 204.90
  4. Step 4: Simplify right side
    352.25x = 99,591.65
  5. Step 5: Solve for x
    x = 99,591.65/352.25
  6. Step 6: Final answer
    x = 282.73

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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.