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Finding the Fourth Proportional to 733.54, 1,099.74 and 386.82

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Solution

The fourth proportional to 733.54, 1,099.74 and 386.82 is: 579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.54 : 1,099.74 = 386.82 : x
  2. Step 2: Convert to fraction form
    733.54/1,099.74 = 386.82/x
  3. Step 3: Cross multiply
    733.54x = 1,099.74 × 386.82
  4. Step 4: Simplify right side
    733.54x = 425,401.43
  5. Step 5: Solve for x
    x = 425,401.43/733.54
  6. Step 6: Final answer
    x = 579.93

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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.