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Finding the Fourth Proportional to 733.15, 1,099.56 and 213.15

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Solution

The fourth proportional to 733.15, 1,099.56 and 213.15 is: 319.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.15 : 1,099.56 = 213.15 : x
  2. Step 2: Convert to fraction form
    733.15/1,099.56 = 213.15/x
  3. Step 3: Cross multiply
    733.15x = 1,099.56 × 213.15
  4. Step 4: Simplify right side
    733.15x = 234,365.72
  5. Step 5: Solve for x
    x = 234,365.72/733.15
  6. Step 6: Final answer
    x = 319.67

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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.