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Finding the Fourth Proportional to 983.17, 1,474.72 and 333.91

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Solution

The fourth proportional to 983.17, 1,474.72 and 333.91 is: 500.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.17 : 1,474.72 = 333.91 : x
  2. Step 2: Convert to fraction form
    983.17/1,474.72 = 333.91/x
  3. Step 3: Cross multiply
    983.17x = 1,474.72 × 333.91
  4. Step 4: Simplify right side
    983.17x = 492,419.23
  5. Step 5: Solve for x
    x = 492,419.23/983.17
  6. Step 6: Final answer
    x = 500.85

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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.