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Finding the Fourth Proportional to 351.74, 527.46 and 108.22

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Solution

The fourth proportional to 351.74, 527.46 and 108.22 is: 162.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.74 : 527.46 = 108.22 : x
  2. Step 2: Convert to fraction form
    351.74/527.46 = 108.22/x
  3. Step 3: Cross multiply
    351.74x = 527.46 × 108.22
  4. Step 4: Simplify right side
    351.74x = 57,081.72
  5. Step 5: Solve for x
    x = 57,081.72/351.74
  6. Step 6: Final answer
    x = 162.28

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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.