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Finding the Fourth Proportional to 352.99, 487.17 and 205.67

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Solution

The fourth proportional to 352.99, 487.17 and 205.67 is: 283.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.99 : 487.17 = 205.67 : x
  2. Step 2: Convert to fraction form
    352.99/487.17 = 205.67/x
  3. Step 3: Cross multiply
    352.99x = 487.17 × 205.67
  4. Step 4: Simplify right side
    352.99x = 100,193.30
  5. Step 5: Solve for x
    x = 100,193.30/352.99
  6. Step 6: Final answer
    x = 283.85

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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.