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Finding the Fourth Proportional to 447.48, 612.79 and 445.94

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Solution

The fourth proportional to 447.48, 612.79 and 445.94 is: 610.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.48 : 612.79 = 445.94 : x
  2. Step 2: Convert to fraction form
    447.48/612.79 = 445.94/x
  3. Step 3: Cross multiply
    447.48x = 612.79 × 445.94
  4. Step 4: Simplify right side
    447.48x = 273,268.12
  5. Step 5: Solve for x
    x = 273,268.12/447.48
  6. Step 6: Final answer
    x = 610.68

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.