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Finding the Fourth Proportional to 170.91, 254.48 and 168.31

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Solution

The fourth proportional to 170.91, 254.48 and 168.31 is: 250.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.91 : 254.48 = 168.31 : x
  2. Step 2: Convert to fraction form
    170.91/254.48 = 168.31/x
  3. Step 3: Cross multiply
    170.91x = 254.48 × 168.31
  4. Step 4: Simplify right side
    170.91x = 42,831.01
  5. Step 5: Solve for x
    x = 42,831.01/170.91
  6. Step 6: Final answer
    x = 250.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.