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Finding the Fourth Proportional to 449.45, 617.61 and 366.38

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Solution

The fourth proportional to 449.45, 617.61 and 366.38 is: 503.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.45 : 617.61 = 366.38 : x
  2. Step 2: Convert to fraction form
    449.45/617.61 = 366.38/x
  3. Step 3: Cross multiply
    449.45x = 617.61 × 366.38
  4. Step 4: Simplify right side
    449.45x = 226,278.12
  5. Step 5: Solve for x
    x = 226,278.12/449.45
  6. Step 6: Final answer
    x = 503.46

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.