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Finding the Fourth Proportional to 629.96, 945 and 239.96

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Solution

The fourth proportional to 629.96, 945 and 239.96 is: 359.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.96 : 945 = 239.96 : x
  2. Step 2: Convert to fraction form
    629.96/945 = 239.96/x
  3. Step 3: Cross multiply
    629.96x = 945 × 239.96
  4. Step 4: Simplify right side
    629.96x = 226,762.20
  5. Step 5: Solve for x
    x = 226,762.20/629.96
  6. Step 6: Final answer
    x = 359.96

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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.