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Finding the Fourth Proportional to 446.11, 668.26 and 272.23

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Solution

The fourth proportional to 446.11, 668.26 and 272.23 is: 407.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.11 : 668.26 = 272.23 : x
  2. Step 2: Convert to fraction form
    446.11/668.26 = 272.23/x
  3. Step 3: Cross multiply
    446.11x = 668.26 × 272.23
  4. Step 4: Simplify right side
    446.11x = 181,920.42
  5. Step 5: Solve for x
    x = 181,920.42/446.11
  6. Step 6: Final answer
    x = 407.79

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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.