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Finding the Fourth Proportional to 671.27, 926.69 and 447.58

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Solution

The fourth proportional to 671.27, 926.69 and 447.58 is: 617.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.27 : 926.69 = 447.58 : x
  2. Step 2: Convert to fraction form
    671.27/926.69 = 447.58/x
  3. Step 3: Cross multiply
    671.27x = 926.69 × 447.58
  4. Step 4: Simplify right side
    671.27x = 414,764.14
  5. Step 5: Solve for x
    x = 414,764.14/671.27
  6. Step 6: Final answer
    x = 617.88

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1.5x scale

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.