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Finding the Fourth Proportional to 184.75, 255 and 115.79

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Solution

The fourth proportional to 184.75, 255 and 115.79 is: 159.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.75 : 255 = 115.79 : x
  2. Step 2: Convert to fraction form
    184.75/255 = 115.79/x
  3. Step 3: Cross multiply
    184.75x = 255 × 115.79
  4. Step 4: Simplify right side
    184.75x = 29,526.45
  5. Step 5: Solve for x
    x = 29,526.45/184.75
  6. Step 6: Final answer
    x = 159.82

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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.