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Finding the Fourth Proportional to 300.84, 415.36 and 213.36

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Solution

The fourth proportional to 300.84, 415.36 and 213.36 is: 294.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.84 : 415.36 = 213.36 : x
  2. Step 2: Convert to fraction form
    300.84/415.36 = 213.36/x
  3. Step 3: Cross multiply
    300.84x = 415.36 × 213.36
  4. Step 4: Simplify right side
    300.84x = 88,621.21
  5. Step 5: Solve for x
    x = 88,621.21/300.84
  6. Step 6: Final answer
    x = 294.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.