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Finding the Fourth Proportional to 185.85, 279.09 and 165.33

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Solution

The fourth proportional to 185.85, 279.09 and 165.33 is: 248.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.85 : 279.09 = 165.33 : x
  2. Step 2: Convert to fraction form
    185.85/279.09 = 165.33/x
  3. Step 3: Cross multiply
    185.85x = 279.09 × 165.33
  4. Step 4: Simplify right side
    185.85x = 46,141.95
  5. Step 5: Solve for x
    x = 46,141.95/185.85
  6. Step 6: Final answer
    x = 248.28

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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.