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Finding the Fourth Proportional to 543.71, 815.06 and 269.73

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Solution

The fourth proportional to 543.71, 815.06 and 269.73 is: 404.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.71 : 815.06 = 269.73 : x
  2. Step 2: Convert to fraction form
    543.71/815.06 = 269.73/x
  3. Step 3: Cross multiply
    543.71x = 815.06 × 269.73
  4. Step 4: Simplify right side
    543.71x = 219,846.81
  5. Step 5: Solve for x
    x = 219,846.81/543.71
  6. Step 6: Final answer
    x = 404.34

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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.