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Finding the Fourth Proportional to 341.72, 513.34 and 211.82

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Solution

The fourth proportional to 341.72, 513.34 and 211.82 is: 318.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.72 : 513.34 = 211.82 : x
  2. Step 2: Convert to fraction form
    341.72/513.34 = 211.82/x
  3. Step 3: Cross multiply
    341.72x = 513.34 × 211.82
  4. Step 4: Simplify right side
    341.72x = 108,735.68
  5. Step 5: Solve for x
    x = 108,735.68/341.72
  6. Step 6: Final answer
    x = 318.20

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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.