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Finding the Fourth Proportional to 574.03, 861.62 and 300.05

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Solution

The fourth proportional to 574.03, 861.62 and 300.05 is: 450.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.03 : 861.62 = 300.05 : x
  2. Step 2: Convert to fraction form
    574.03/861.62 = 300.05/x
  3. Step 3: Cross multiply
    574.03x = 861.62 × 300.05
  4. Step 4: Simplify right side
    574.03x = 258,523.27
  5. Step 5: Solve for x
    x = 258,523.27/574.03
  6. Step 6: Final answer
    x = 450.37

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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.