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Finding the Fourth Proportional to 185.04, 255.34 and 102.15

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Solution

The fourth proportional to 185.04, 255.34 and 102.15 is: 140.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.04 : 255.34 = 102.15 : x
  2. Step 2: Convert to fraction form
    185.04/255.34 = 102.15/x
  3. Step 3: Cross multiply
    185.04x = 255.34 × 102.15
  4. Step 4: Simplify right side
    185.04x = 26,081.96
  5. Step 5: Solve for x
    x = 26,081.96/185.04
  6. Step 6: Final answer
    x = 140.96

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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.