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Finding the Fourth Proportional to 163.67, 245.56 and 102.71

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Solution

The fourth proportional to 163.67, 245.56 and 102.71 is: 154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.67 : 245.56 = 102.71 : x
  2. Step 2: Convert to fraction form
    163.67/245.56 = 102.71/x
  3. Step 3: Cross multiply
    163.67x = 245.56 × 102.71
  4. Step 4: Simplify right side
    163.67x = 25,220.95
  5. Step 5: Solve for x
    x = 25,220.95/163.67
  6. Step 6: Final answer
    x = 154.10

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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.