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Finding the Fourth Proportional to 170.46, 235.26 and 108.30

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Solution

The fourth proportional to 170.46, 235.26 and 108.30 is: 149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.46 : 235.26 = 108.30 : x
  2. Step 2: Convert to fraction form
    170.46/235.26 = 108.30/x
  3. Step 3: Cross multiply
    170.46x = 235.26 × 108.30
  4. Step 4: Simplify right side
    170.46x = 25,478.66
  5. Step 5: Solve for x
    x = 25,478.66/170.46
  6. Step 6: Final answer
    x = 149.47

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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.