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Finding the Fourth Proportional to 170.03, 255.17 and 112.28

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Solution

The fourth proportional to 170.03, 255.17 and 112.28 is: 168.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.03 : 255.17 = 112.28 : x
  2. Step 2: Convert to fraction form
    170.03/255.17 = 112.28/x
  3. Step 3: Cross multiply
    170.03x = 255.17 × 112.28
  4. Step 4: Simplify right side
    170.03x = 28,650.56
  5. Step 5: Solve for x
    x = 28,650.56/170.03
  6. Step 6: Final answer
    x = 168.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.