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Finding the Fourth Proportional to 983.25, 1,474.88 and 333.99

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Solution

The fourth proportional to 983.25, 1,474.88 and 333.99 is: 500.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.25 : 1,474.88 = 333.99 : x
  2. Step 2: Convert to fraction form
    983.25/1,474.88 = 333.99/x
  3. Step 3: Cross multiply
    983.25x = 1,474.88 × 333.99
  4. Step 4: Simplify right side
    983.25x = 492,593.50
  5. Step 5: Solve for x
    x = 492,593.50/983.25
  6. Step 6: Final answer
    x = 500.99

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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.