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Finding the Fourth Proportional to 352.12, 528.38 and 159.76

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Solution

The fourth proportional to 352.12, 528.38 and 159.76 is: 239.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.12 : 528.38 = 159.76 : x
  2. Step 2: Convert to fraction form
    352.12/528.38 = 159.76/x
  3. Step 3: Cross multiply
    352.12x = 528.38 × 159.76
  4. Step 4: Simplify right side
    352.12x = 84,413.99
  5. Step 5: Solve for x
    x = 84,413.99/352.12
  6. Step 6: Final answer
    x = 239.73

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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.