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Finding the Fourth Proportional to 168.65, 232.79 and 145.24

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Solution

The fourth proportional to 168.65, 232.79 and 145.24 is: 200.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.65 : 232.79 = 145.24 : x
  2. Step 2: Convert to fraction form
    168.65/232.79 = 145.24/x
  3. Step 3: Cross multiply
    168.65x = 232.79 × 145.24
  4. Step 4: Simplify right side
    168.65x = 33,811.24
  5. Step 5: Solve for x
    x = 33,811.24/168.65
  6. Step 6: Final answer
    x = 200.48

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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.