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Finding the Fourth Proportional to 629.76, 945.25 and 305.36

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Solution

The fourth proportional to 629.76, 945.25 and 305.36 is: 458.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.76 : 945.25 = 305.36 : x
  2. Step 2: Convert to fraction form
    629.76/945.25 = 305.36/x
  3. Step 3: Cross multiply
    629.76x = 945.25 × 305.36
  4. Step 4: Simplify right side
    629.76x = 288,636.05
  5. Step 5: Solve for x
    x = 288,636.05/629.76
  6. Step 6: Final answer
    x = 458.33

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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.