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Finding the Fourth Proportional to 170.25, 234.95 and 104.75

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Solution

The fourth proportional to 170.25, 234.95 and 104.75 is: 144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.25 : 234.95 = 104.75 : x
  2. Step 2: Convert to fraction form
    170.25/234.95 = 104.75/x
  3. Step 3: Cross multiply
    170.25x = 234.95 × 104.75
  4. Step 4: Simplify right side
    170.25x = 24,609.31
  5. Step 5: Solve for x
    x = 24,609.31/170.25
  6. Step 6: Final answer
    x = 144.55

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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.