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Finding the Fourth Proportional to 383.85, 575.91 and 229.86

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Solution

The fourth proportional to 383.85, 575.91 and 229.86 is: 344.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.85 : 575.91 = 229.86 : x
  2. Step 2: Convert to fraction form
    383.85/575.91 = 229.86/x
  3. Step 3: Cross multiply
    383.85x = 575.91 × 229.86
  4. Step 4: Simplify right side
    383.85x = 132,378.67
  5. Step 5: Solve for x
    x = 132,378.67/383.85
  6. Step 6: Final answer
    x = 344.87

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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.