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Finding the Fourth Proportional to 170.14, 234.81 and 104.65

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Solution

The fourth proportional to 170.14, 234.81 and 104.65 is: 144.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.14 : 234.81 = 104.65 : x
  2. Step 2: Convert to fraction form
    170.14/234.81 = 104.65/x
  3. Step 3: Cross multiply
    170.14x = 234.81 × 104.65
  4. Step 4: Simplify right side
    170.14x = 24,572.87
  5. Step 5: Solve for x
    x = 24,572.87/170.14
  6. Step 6: Final answer
    x = 144.43

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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.