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Finding the Fourth Proportional to 192.68, 288.31 and 159.87

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Solution

The fourth proportional to 192.68, 288.31 and 159.87 is: 239.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.68 : 288.31 = 159.87 : x
  2. Step 2: Convert to fraction form
    192.68/288.31 = 159.87/x
  3. Step 3: Cross multiply
    192.68x = 288.31 × 159.87
  4. Step 4: Simplify right side
    192.68x = 46,092.12
  5. Step 5: Solve for x
    x = 46,092.12/192.68
  6. Step 6: Final answer
    x = 239.22

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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.