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Finding the Fourth Proportional to 255.06, 382.75 and 168.43

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Solution

The fourth proportional to 255.06, 382.75 and 168.43 is: 252.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.06 : 382.75 = 168.43 : x
  2. Step 2: Convert to fraction form
    255.06/382.75 = 168.43/x
  3. Step 3: Cross multiply
    255.06x = 382.75 × 168.43
  4. Step 4: Simplify right side
    255.06x = 64,466.58
  5. Step 5: Solve for x
    x = 64,466.58/255.06
  6. Step 6: Final answer
    x = 252.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.