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Finding the Fourth Proportional to 163.17, 223.56 and 162.72

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Solution

The fourth proportional to 163.17, 223.56 and 162.72 is: 222.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.17 : 223.56 = 162.72 : x
  2. Step 2: Convert to fraction form
    163.17/223.56 = 162.72/x
  3. Step 3: Cross multiply
    163.17x = 223.56 × 162.72
  4. Step 4: Simplify right side
    163.17x = 36,377.68
  5. Step 5: Solve for x
    x = 36,377.68/163.17
  6. Step 6: Final answer
    x = 222.94

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.