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Finding the Fourth Proportional to 300.94, 415.21 and 207.54

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Solution

The fourth proportional to 300.94, 415.21 and 207.54 is: 286.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.94 : 415.21 = 207.54 : x
  2. Step 2: Convert to fraction form
    300.94/415.21 = 207.54/x
  3. Step 3: Cross multiply
    300.94x = 415.21 × 207.54
  4. Step 4: Simplify right side
    300.94x = 86,170.95
  5. Step 5: Solve for x
    x = 86,170.95/300.94
  6. Step 6: Final answer
    x = 286.34

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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.