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Finding the Fourth Proportional to 732.95, 1,099.37 and 321.98

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Solution

The fourth proportional to 732.95, 1,099.37 and 321.98 is: 482.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.95 : 1,099.37 = 321.98 : x
  2. Step 2: Convert to fraction form
    732.95/1,099.37 = 321.98/x
  3. Step 3: Cross multiply
    732.95x = 1,099.37 × 321.98
  4. Step 4: Simplify right side
    732.95x = 353,968.05
  5. Step 5: Solve for x
    x = 353,968.05/732.95
  6. Step 6: Final answer
    x = 482.94

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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.