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Finding the Fourth Proportional to 574.27, 790.09 and 443.05

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Solution

The fourth proportional to 574.27, 790.09 and 443.05 is: 609.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.27 : 790.09 = 443.05 : x
  2. Step 2: Convert to fraction form
    574.27/790.09 = 443.05/x
  3. Step 3: Cross multiply
    574.27x = 790.09 × 443.05
  4. Step 4: Simplify right side
    574.27x = 350,049.37
  5. Step 5: Solve for x
    x = 350,049.37/574.27
  6. Step 6: Final answer
    x = 609.56

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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.