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Finding the Fourth Proportional to 573.85, 861.09 and 300.18

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Solution

The fourth proportional to 573.85, 861.09 and 300.18 is: 450.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.85 : 861.09 = 300.18 : x
  2. Step 2: Convert to fraction form
    573.85/861.09 = 300.18/x
  3. Step 3: Cross multiply
    573.85x = 861.09 × 300.18
  4. Step 4: Simplify right side
    573.85x = 258,480.50
  5. Step 5: Solve for x
    x = 258,480.50/573.85
  6. Step 6: Final answer
    x = 450.43

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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.