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Finding the Fourth Proportional to 537.89, 742.29 and 351.69

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Solution

The fourth proportional to 537.89, 742.29 and 351.69 is: 485.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.89 : 742.29 = 351.69 : x
  2. Step 2: Convert to fraction form
    537.89/742.29 = 351.69/x
  3. Step 3: Cross multiply
    537.89x = 742.29 × 351.69
  4. Step 4: Simplify right side
    537.89x = 261,057.03
  5. Step 5: Solve for x
    x = 261,057.03/537.89
  6. Step 6: Final answer
    x = 485.33

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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.