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Finding the Fourth Proportional to 168.48, 251.46 and 155.64

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Solution

The fourth proportional to 168.48, 251.46 and 155.64 is: 232.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.48 : 251.46 = 155.64 : x
  2. Step 2: Convert to fraction form
    168.48/251.46 = 155.64/x
  3. Step 3: Cross multiply
    168.48x = 251.46 × 155.64
  4. Step 4: Simplify right side
    168.48x = 39,137.23
  5. Step 5: Solve for x
    x = 39,137.23/168.48
  6. Step 6: Final answer
    x = 232.30

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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.