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Finding the Fourth Proportional to 162.67, 243.43 and 160.85

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Solution

The fourth proportional to 162.67, 243.43 and 160.85 is: 240.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.67 : 243.43 = 160.85 : x
  2. Step 2: Convert to fraction form
    162.67/243.43 = 160.85/x
  3. Step 3: Cross multiply
    162.67x = 243.43 × 160.85
  4. Step 4: Simplify right side
    162.67x = 39,155.72
  5. Step 5: Solve for x
    x = 39,155.72/162.67
  6. Step 6: Final answer
    x = 240.71

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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.