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Finding the Fourth Proportional to 629.34, 943.75 and 218.36

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Solution

The fourth proportional to 629.34, 943.75 and 218.36 is: 327.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.34 : 943.75 = 218.36 : x
  2. Step 2: Convert to fraction form
    629.34/943.75 = 218.36/x
  3. Step 3: Cross multiply
    629.34x = 943.75 × 218.36
  4. Step 4: Simplify right side
    629.34x = 206,077.25
  5. Step 5: Solve for x
    x = 206,077.25/629.34
  6. Step 6: Final answer
    x = 327.45

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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.