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Finding the Fourth Proportional to 185.39, 255.65 and 159.26

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Solution

The fourth proportional to 185.39, 255.65 and 159.26 is: 219.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.39 : 255.65 = 159.26 : x
  2. Step 2: Convert to fraction form
    185.39/255.65 = 159.26/x
  3. Step 3: Cross multiply
    185.39x = 255.65 × 159.26
  4. Step 4: Simplify right side
    185.39x = 40,712.74
  5. Step 5: Solve for x
    x = 40,712.74/185.39
  6. Step 6: Final answer
    x = 219.61

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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.