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Finding the Fourth Proportional to 447.86, 672.21 and 446.22

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Solution

The fourth proportional to 447.86, 672.21 and 446.22 is: 669.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.86 : 672.21 = 446.22 : x
  2. Step 2: Convert to fraction form
    447.86/672.21 = 446.22/x
  3. Step 3: Cross multiply
    447.86x = 672.21 × 446.22
  4. Step 4: Simplify right side
    447.86x = 299,953.55
  5. Step 5: Solve for x
    x = 299,953.55/447.86
  6. Step 6: Final answer
    x = 669.74

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1.5x scale

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.