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Finding the Fourth Proportional to 351.61, 527.48 and 108.12

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Solution

The fourth proportional to 351.61, 527.48 and 108.12 is: 162.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.61 : 527.48 = 108.12 : x
  2. Step 2: Convert to fraction form
    351.61/527.48 = 108.12/x
  3. Step 3: Cross multiply
    351.61x = 527.48 × 108.12
  4. Step 4: Simplify right side
    351.61x = 57,031.14
  5. Step 5: Solve for x
    x = 57,031.14/351.61
  6. Step 6: Final answer
    x = 162.20

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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.