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Finding the Fourth Proportional to 969.45, 1,452.99 and 481.46

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Solution

The fourth proportional to 969.45, 1,452.99 and 481.46 is: 721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.45 : 1,452.99 = 481.46 : x
  2. Step 2: Convert to fraction form
    969.45/1,452.99 = 481.46/x
  3. Step 3: Cross multiply
    969.45x = 1,452.99 × 481.46
  4. Step 4: Simplify right side
    969.45x = 699,549.30
  5. Step 5: Solve for x
    x = 699,549.30/969.45
  6. Step 6: Final answer
    x = 721.59

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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.