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Finding the Fourth Proportional to 380.09, 569.05 and 234.83

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Solution

The fourth proportional to 380.09, 569.05 and 234.83 is: 351.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.09 : 569.05 = 234.83 : x
  2. Step 2: Convert to fraction form
    380.09/569.05 = 234.83/x
  3. Step 3: Cross multiply
    380.09x = 569.05 × 234.83
  4. Step 4: Simplify right side
    380.09x = 133,630.85
  5. Step 5: Solve for x
    x = 133,630.85/380.09
  6. Step 6: Final answer
    x = 351.57

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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.