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Finding the Fourth Proportional to 185.26, 255.48 and 119.80

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Solution

The fourth proportional to 185.26, 255.48 and 119.80 is: 165.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.26 : 255.48 = 119.80 : x
  2. Step 2: Convert to fraction form
    185.26/255.48 = 119.80/x
  3. Step 3: Cross multiply
    185.26x = 255.48 × 119.80
  4. Step 4: Simplify right side
    185.26x = 30,606.50
  5. Step 5: Solve for x
    x = 30,606.50/185.26
  6. Step 6: Final answer
    x = 165.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.