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Finding the Fourth Proportional to 301.13, 415.41 and 213.85

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Solution

The fourth proportional to 301.13, 415.41 and 213.85 is: 295.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.13 : 415.41 = 213.85 : x
  2. Step 2: Convert to fraction form
    301.13/415.41 = 213.85/x
  3. Step 3: Cross multiply
    301.13x = 415.41 × 213.85
  4. Step 4: Simplify right side
    301.13x = 88,833.89
  5. Step 5: Solve for x
    x = 88,833.89/301.13
  6. Step 6: Final answer
    x = 295.01

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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.