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Finding the Fourth Proportional to 300.82, 417.07 and 284.44

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Solution

The fourth proportional to 300.82, 417.07 and 284.44 is: 394.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.82 : 417.07 = 284.44 : x
  2. Step 2: Convert to fraction form
    300.82/417.07 = 284.44/x
  3. Step 3: Cross multiply
    300.82x = 417.07 × 284.44
  4. Step 4: Simplify right side
    300.82x = 118,631.39
  5. Step 5: Solve for x
    x = 118,631.39/300.82
  6. Step 6: Final answer
    x = 394.36

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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.