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Finding the Fourth Proportional to 168.75, 251.07 and 164.56

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Solution

The fourth proportional to 168.75, 251.07 and 164.56 is: 244.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.75 : 251.07 = 164.56 : x
  2. Step 2: Convert to fraction form
    168.75/251.07 = 164.56/x
  3. Step 3: Cross multiply
    168.75x = 251.07 × 164.56
  4. Step 4: Simplify right side
    168.75x = 41,316.08
  5. Step 5: Solve for x
    x = 41,316.08/168.75
  6. Step 6: Final answer
    x = 244.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.