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Finding the Fourth Proportional to 665.11, 997.99 and 372.83

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Solution

The fourth proportional to 665.11, 997.99 and 372.83 is: 559.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.11 : 997.99 = 372.83 : x
  2. Step 2: Convert to fraction form
    665.11/997.99 = 372.83/x
  3. Step 3: Cross multiply
    665.11x = 997.99 × 372.83
  4. Step 4: Simplify right side
    665.11x = 372,080.61
  5. Step 5: Solve for x
    x = 372,080.61/665.11
  6. Step 6: Final answer
    x = 559.43

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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.