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Finding the Fourth Proportional to 628.98, 943.49 and 299.96

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Solution

The fourth proportional to 628.98, 943.49 and 299.96 is: 449.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.98 : 943.49 = 299.96 : x
  2. Step 2: Convert to fraction form
    628.98/943.49 = 299.96/x
  3. Step 3: Cross multiply
    628.98x = 943.49 × 299.96
  4. Step 4: Simplify right side
    628.98x = 283,006.47
  5. Step 5: Solve for x
    x = 283,006.47/628.98
  6. Step 6: Final answer
    x = 449.94

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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.