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Finding the Fourth Proportional to 229.60, 315.44 and 185.80

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Solution

The fourth proportional to 229.60, 315.44 and 185.80 is: 255.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.60 : 315.44 = 185.80 : x
  2. Step 2: Convert to fraction form
    229.60/315.44 = 185.80/x
  3. Step 3: Cross multiply
    229.60x = 315.44 × 185.80
  4. Step 4: Simplify right side
    229.60x = 58,608.75
  5. Step 5: Solve for x
    x = 58,608.75/229.60
  6. Step 6: Final answer
    x = 255.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.