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Finding the Fourth Proportional to 351.37, 527.21 and 205.17

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Solution

The fourth proportional to 351.37, 527.21 and 205.17 is: 307.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.37 : 527.21 = 205.17 : x
  2. Step 2: Convert to fraction form
    351.37/527.21 = 205.17/x
  3. Step 3: Cross multiply
    351.37x = 527.21 × 205.17
  4. Step 4: Simplify right side
    351.37x = 108,165.44
  5. Step 5: Solve for x
    x = 108,165.44/351.37
  6. Step 6: Final answer
    x = 307.84

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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.