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Finding the Fourth Proportional to 341.39, 512.09 and 205.31

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Solution

The fourth proportional to 341.39, 512.09 and 205.31 is: 307.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.39 : 512.09 = 205.31 : x
  2. Step 2: Convert to fraction form
    341.39/512.09 = 205.31/x
  3. Step 3: Cross multiply
    341.39x = 512.09 × 205.31
  4. Step 4: Simplify right side
    341.39x = 105,137.45
  5. Step 5: Solve for x
    x = 105,137.45/341.39
  6. Step 6: Final answer
    x = 307.97

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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.