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Finding the Fourth Proportional to 170.47, 255.30 and 125.11

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Solution

The fourth proportional to 170.47, 255.30 and 125.11 is: 187.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.47 : 255.30 = 125.11 : x
  2. Step 2: Convert to fraction form
    170.47/255.30 = 125.11/x
  3. Step 3: Cross multiply
    170.47x = 255.30 × 125.11
  4. Step 4: Simplify right side
    170.47x = 31,940.58
  5. Step 5: Solve for x
    x = 31,940.58/170.47
  6. Step 6: Final answer
    x = 187.37

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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.