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Finding the Fourth Proportional to 629.98, 945.17 and 219.11

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Solution

The fourth proportional to 629.98, 945.17 and 219.11 is: 328.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.98 : 945.17 = 219.11 : x
  2. Step 2: Convert to fraction form
    629.98/945.17 = 219.11/x
  3. Step 3: Cross multiply
    629.98x = 945.17 × 219.11
  4. Step 4: Simplify right side
    629.98x = 207,091.20
  5. Step 5: Solve for x
    x = 207,091.20/629.98
  6. Step 6: Final answer
    x = 328.73

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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.