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Finding the Fourth Proportional to 983.30, 1,474.13 and 463.03

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Solution

The fourth proportional to 983.30, 1,474.13 and 463.03 is: 694.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.30 : 1,474.13 = 463.03 : x
  2. Step 2: Convert to fraction form
    983.30/1,474.13 = 463.03/x
  3. Step 3: Cross multiply
    983.30x = 1,474.13 × 463.03
  4. Step 4: Simplify right side
    983.30x = 682,563.89
  5. Step 5: Solve for x
    x = 682,563.89/983.30
  6. Step 6: Final answer
    x = 694.16

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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.