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Finding the Fourth Proportional to 170.51, 255.56 and 92.43

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Solution

The fourth proportional to 170.51, 255.56 and 92.43 is: 138.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.51 : 255.56 = 92.43 : x
  2. Step 2: Convert to fraction form
    170.51/255.56 = 92.43/x
  3. Step 3: Cross multiply
    170.51x = 255.56 × 92.43
  4. Step 4: Simplify right side
    170.51x = 23,620.95
  5. Step 5: Solve for x
    x = 23,620.95/170.51
  6. Step 6: Final answer
    x = 138.54

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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.