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Finding the Fourth Proportional to 629.79, 944.69 and 300.76

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Solution

The fourth proportional to 629.79, 944.69 and 300.76 is: 451.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.79 : 944.69 = 300.76 : x
  2. Step 2: Convert to fraction form
    629.79/944.69 = 300.76/x
  3. Step 3: Cross multiply
    629.79x = 944.69 × 300.76
  4. Step 4: Simplify right side
    629.79x = 284,124.96
  5. Step 5: Solve for x
    x = 284,124.96/629.79
  6. Step 6: Final answer
    x = 451.14

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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.