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Finding the Fourth Proportional to 169.76, 235.47 and 163.94

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Solution

The fourth proportional to 169.76, 235.47 and 163.94 is: 227.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.76 : 235.47 = 163.94 : x
  2. Step 2: Convert to fraction form
    169.76/235.47 = 163.94/x
  3. Step 3: Cross multiply
    169.76x = 235.47 × 163.94
  4. Step 4: Simplify right side
    169.76x = 38,602.39
  5. Step 5: Solve for x
    x = 38,602.39/169.76
  6. Step 6: Final answer
    x = 227.39

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.