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Finding the Fourth Proportional to 901.46, 1,350.99 and 323.78

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Solution

The fourth proportional to 901.46, 1,350.99 and 323.78 is: 485.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.46 : 1,350.99 = 323.78 : x
  2. Step 2: Convert to fraction form
    901.46/1,350.99 = 323.78/x
  3. Step 3: Cross multiply
    901.46x = 1,350.99 × 323.78
  4. Step 4: Simplify right side
    901.46x = 437,423.54
  5. Step 5: Solve for x
    x = 437,423.54/901.46
  6. Step 6: Final answer
    x = 485.24

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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.