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Finding the Fourth Proportional to 983.16, 1,474.44 and 333.72

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Solution

The fourth proportional to 983.16, 1,474.44 and 333.72 is: 500.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.16 : 1,474.44 = 333.72 : x
  2. Step 2: Convert to fraction form
    983.16/1,474.44 = 333.72/x
  3. Step 3: Cross multiply
    983.16x = 1,474.44 × 333.72
  4. Step 4: Simplify right side
    983.16x = 492,050.12
  5. Step 5: Solve for x
    x = 492,050.12/983.16
  6. Step 6: Final answer
    x = 500.48

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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.