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Finding the Fourth Proportional to 170.03, 234.66 and 107.86

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Solution

The fourth proportional to 170.03, 234.66 and 107.86 is: 148.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.03 : 234.66 = 107.86 : x
  2. Step 2: Convert to fraction form
    170.03/234.66 = 107.86/x
  3. Step 3: Cross multiply
    170.03x = 234.66 × 107.86
  4. Step 4: Simplify right side
    170.03x = 25,308.72
  5. Step 5: Solve for x
    x = 25,308.72/170.03
  6. Step 6: Final answer
    x = 148.85

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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.