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Finding the Fourth Proportional to 721.35, 1,082.06 and 234.44

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Solution

The fourth proportional to 721.35, 1,082.06 and 234.44 is: 351.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    721.35 : 1,082.06 = 234.44 : x
  2. Step 2: Convert to fraction form
    721.35/1,082.06 = 234.44/x
  3. Step 3: Cross multiply
    721.35x = 1,082.06 × 234.44
  4. Step 4: Simplify right side
    721.35x = 253,673.32
  5. Step 5: Solve for x
    x = 253,673.32/721.35
  6. Step 6: Final answer
    x = 351.66

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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.