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Finding the Fourth Proportional to 168.10, 255.08 and 168.10

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Solution

The fourth proportional to 168.10, 255.08 and 168.10 is: 255.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.10 : 255.08 = 168.10 : x
  2. Step 2: Convert to fraction form
    168.10/255.08 = 168.10/x
  3. Step 3: Cross multiply
    168.10x = 255.08 × 168.10
  4. Step 4: Simplify right side
    168.10x = 42,878.95
  5. Step 5: Solve for x
    x = 42,878.95/168.10
  6. Step 6: Final answer
    x = 255.08

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.