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Finding the Fourth Proportional to 682.23, 941.87 and 449.76

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Solution

The fourth proportional to 682.23, 941.87 and 449.76 is: 620.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.23 : 941.87 = 449.76 : x
  2. Step 2: Convert to fraction form
    682.23/941.87 = 449.76/x
  3. Step 3: Cross multiply
    682.23x = 941.87 × 449.76
  4. Step 4: Simplify right side
    682.23x = 423,613.20
  5. Step 5: Solve for x
    x = 423,613.20/682.23
  6. Step 6: Final answer
    x = 620.92

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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.