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Finding the Fourth Proportional to 299.82, 415.68 and 283.44

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Solution

The fourth proportional to 299.82, 415.68 and 283.44 is: 392.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.82 : 415.68 = 283.44 : x
  2. Step 2: Convert to fraction form
    299.82/415.68 = 283.44/x
  3. Step 3: Cross multiply
    299.82x = 415.68 × 283.44
  4. Step 4: Simplify right side
    299.82x = 117,820.34
  5. Step 5: Solve for x
    x = 117,820.34/299.82
  6. Step 6: Final answer
    x = 392.97

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.