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Finding the Fourth Proportional to 341.32, 512.12 and 211.13

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Solution

The fourth proportional to 341.32, 512.12 and 211.13 is: 316.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.32 : 512.12 = 211.13 : x
  2. Step 2: Convert to fraction form
    341.32/512.12 = 211.13/x
  3. Step 3: Cross multiply
    341.32x = 512.12 × 211.13
  4. Step 4: Simplify right side
    341.32x = 108,121.98
  5. Step 5: Solve for x
    x = 108,121.98/341.32
  6. Step 6: Final answer
    x = 316.78

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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.