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Finding the Fourth Proportional to 732.94, 1,099.17 and 212.89

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Solution

The fourth proportional to 732.94, 1,099.17 and 212.89 is: 319.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.94 : 1,099.17 = 212.89 : x
  2. Step 2: Convert to fraction form
    732.94/1,099.17 = 212.89/x
  3. Step 3: Cross multiply
    732.94x = 1,099.17 × 212.89
  4. Step 4: Simplify right side
    732.94x = 234,002.30
  5. Step 5: Solve for x
    x = 234,002.30/732.94
  6. Step 6: Final answer
    x = 319.27

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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.