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Finding the Fourth Proportional to 732.92, 1,099.26 and 321.98

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Solution

The fourth proportional to 732.92, 1,099.26 and 321.98 is: 482.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.92 : 1,099.26 = 321.98 : x
  2. Step 2: Convert to fraction form
    732.92/1,099.26 = 321.98/x
  3. Step 3: Cross multiply
    732.92x = 1,099.26 × 321.98
  4. Step 4: Simplify right side
    732.92x = 353,934.24
  5. Step 5: Solve for x
    x = 353,934.24/732.92
  6. Step 6: Final answer
    x = 482.91

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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.