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Finding the Fourth Proportional to 168.51, 251.52 and 158.25

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Solution

The fourth proportional to 168.51, 251.52 and 158.25 is: 236.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.51 : 251.52 = 158.25 : x
  2. Step 2: Convert to fraction form
    168.51/251.52 = 158.25/x
  3. Step 3: Cross multiply
    168.51x = 251.52 × 158.25
  4. Step 4: Simplify right side
    168.51x = 39,803.04
  5. Step 5: Solve for x
    x = 39,803.04/168.51
  6. Step 6: Final answer
    x = 236.21

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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.