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Finding the Fourth Proportional to 162.37, 243.67 and 108.38

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Solution

The fourth proportional to 162.37, 243.67 and 108.38 is: 162.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.37 : 243.67 = 108.38 : x
  2. Step 2: Convert to fraction form
    162.37/243.67 = 108.38/x
  3. Step 3: Cross multiply
    162.37x = 243.67 × 108.38
  4. Step 4: Simplify right side
    162.37x = 26,408.95
  5. Step 5: Solve for x
    x = 26,408.95/162.37
  6. Step 6: Final answer
    x = 162.65

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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.