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Finding the Fourth Proportional to 170.35, 235.27 and 108.15

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Solution

The fourth proportional to 170.35, 235.27 and 108.15 is: 149.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.35 : 235.27 = 108.15 : x
  2. Step 2: Convert to fraction form
    170.35/235.27 = 108.15/x
  3. Step 3: Cross multiply
    170.35x = 235.27 × 108.15
  4. Step 4: Simplify right side
    170.35x = 25,445.75
  5. Step 5: Solve for x
    x = 25,445.75/170.35
  6. Step 6: Final answer
    x = 149.38

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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.