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Finding the Fourth Proportional to 732.55, 1,098.84 and 321.47

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Solution

The fourth proportional to 732.55, 1,098.84 and 321.47 is: 482.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.55 : 1,098.84 = 321.47 : x
  2. Step 2: Convert to fraction form
    732.55/1,098.84 = 321.47/x
  3. Step 3: Cross multiply
    732.55x = 1,098.84 × 321.47
  4. Step 4: Simplify right side
    732.55x = 353,244.09
  5. Step 5: Solve for x
    x = 353,244.09/732.55
  6. Step 6: Final answer
    x = 482.21

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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.