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Finding the Fourth Proportional to 449.82, 619.92 and 366.66

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Solution

The fourth proportional to 449.82, 619.92 and 366.66 is: 505.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.82 : 619.92 = 366.66 : x
  2. Step 2: Convert to fraction form
    449.82/619.92 = 366.66/x
  3. Step 3: Cross multiply
    449.82x = 619.92 × 366.66
  4. Step 4: Simplify right side
    449.82x = 227,299.87
  5. Step 5: Solve for x
    x = 227,299.87/449.82
  6. Step 6: Final answer
    x = 505.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.