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Finding the Fourth Proportional to 983.07, 1,474.62 and 252.66

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Solution

The fourth proportional to 983.07, 1,474.62 and 252.66 is: 378.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.07 : 1,474.62 = 252.66 : x
  2. Step 2: Convert to fraction form
    983.07/1,474.62 = 252.66/x
  3. Step 3: Cross multiply
    983.07x = 1,474.62 × 252.66
  4. Step 4: Simplify right side
    983.07x = 372,572.06
  5. Step 5: Solve for x
    x = 372,572.06/983.07
  6. Step 6: Final answer
    x = 378.99

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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.