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Finding the Fourth Proportional to 911.73, 1,367.60 and 363.76

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Solution

The fourth proportional to 911.73, 1,367.60 and 363.76 is: 545.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    911.73 : 1,367.60 = 363.76 : x
  2. Step 2: Convert to fraction form
    911.73/1,367.60 = 363.76/x
  3. Step 3: Cross multiply
    911.73x = 1,367.60 × 363.76
  4. Step 4: Simplify right side
    911.73x = 497,478.18
  5. Step 5: Solve for x
    x = 497,478.18/911.73
  6. Step 6: Final answer
    x = 545.64

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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.