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Finding the Fourth Proportional to 340.30, 509.82 and 247.96

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Solution

The fourth proportional to 340.30, 509.82 and 247.96 is: 371.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.30 : 509.82 = 247.96 : x
  2. Step 2: Convert to fraction form
    340.30/509.82 = 247.96/x
  3. Step 3: Cross multiply
    340.30x = 509.82 × 247.96
  4. Step 4: Simplify right side
    340.30x = 126,414.97
  5. Step 5: Solve for x
    x = 126,414.97/340.30
  6. Step 6: Final answer
    x = 371.48

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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.