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Finding the Fourth Proportional to 351.43, 527.21 and 107.95

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Solution

The fourth proportional to 351.43, 527.21 and 107.95 is: 161.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.43 : 527.21 = 107.95 : x
  2. Step 2: Convert to fraction form
    351.43/527.21 = 107.95/x
  3. Step 3: Cross multiply
    351.43x = 527.21 × 107.95
  4. Step 4: Simplify right side
    351.43x = 56,911.78
  5. Step 5: Solve for x
    x = 56,911.78/351.43
  6. Step 6: Final answer
    x = 161.94

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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.