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Finding the Fourth Proportional to 441.27, 657.01 and 439.91

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Solution

The fourth proportional to 441.27, 657.01 and 439.91 is: 654.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.27 : 657.01 = 439.91 : x
  2. Step 2: Convert to fraction form
    441.27/657.01 = 439.91/x
  3. Step 3: Cross multiply
    441.27x = 657.01 × 439.91
  4. Step 4: Simplify right side
    441.27x = 289,023.15
  5. Step 5: Solve for x
    x = 289,023.15/441.27
  6. Step 6: Final answer
    x = 654.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.