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Finding the Fourth Proportional to 629.56, 944.34 and 218.71

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Solution

The fourth proportional to 629.56, 944.34 and 218.71 is: 328.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.56 : 944.34 = 218.71 : x
  2. Step 2: Convert to fraction form
    629.56/944.34 = 218.71/x
  3. Step 3: Cross multiply
    629.56x = 944.34 × 218.71
  4. Step 4: Simplify right side
    629.56x = 206,536.60
  5. Step 5: Solve for x
    x = 206,536.60/629.56
  6. Step 6: Final answer
    x = 328.07

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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.