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Finding the Fourth Proportional to 170.37, 234.99 and 149.61

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Solution

The fourth proportional to 170.37, 234.99 and 149.61 is: 206.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.37 : 234.99 = 149.61 : x
  2. Step 2: Convert to fraction form
    170.37/234.99 = 149.61/x
  3. Step 3: Cross multiply
    170.37x = 234.99 × 149.61
  4. Step 4: Simplify right side
    170.37x = 35,156.85
  5. Step 5: Solve for x
    x = 35,156.85/170.37
  6. Step 6: Final answer
    x = 206.36

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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.