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Finding the Fourth Proportional to 449.26, 611.66 and 447.86

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Solution

The fourth proportional to 449.26, 611.66 and 447.86 is: 609.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.26 : 611.66 = 447.86 : x
  2. Step 2: Convert to fraction form
    449.26/611.66 = 447.86/x
  3. Step 3: Cross multiply
    449.26x = 611.66 × 447.86
  4. Step 4: Simplify right side
    449.26x = 273,937.34
  5. Step 5: Solve for x
    x = 273,937.34/449.26
  6. Step 6: Final answer
    x = 609.76

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.