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Finding the Fourth Proportional to 352.18, 528.27 and 159.81

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Solution

The fourth proportional to 352.18, 528.27 and 159.81 is: 239.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.18 : 528.27 = 159.81 : x
  2. Step 2: Convert to fraction form
    352.18/528.27 = 159.81/x
  3. Step 3: Cross multiply
    352.18x = 528.27 × 159.81
  4. Step 4: Simplify right side
    352.18x = 84,422.83
  5. Step 5: Solve for x
    x = 84,422.83/352.18
  6. Step 6: Final answer
    x = 239.72

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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.