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Finding the Fourth Proportional to 447.96, 672.45 and 445.98

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Solution

The fourth proportional to 447.96, 672.45 and 445.98 is: 669.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.96 : 672.45 = 445.98 : x
  2. Step 2: Convert to fraction form
    447.96/672.45 = 445.98/x
  3. Step 3: Cross multiply
    447.96x = 672.45 × 445.98
  4. Step 4: Simplify right side
    447.96x = 299,899.25
  5. Step 5: Solve for x
    x = 299,899.25/447.96
  6. Step 6: Final answer
    x = 669.48

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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.