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Finding the Fourth Proportional to 301.14, 415.57 and 163.14

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Solution

The fourth proportional to 301.14, 415.57 and 163.14 is: 225.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.14 : 415.57 = 163.14 : x
  2. Step 2: Convert to fraction form
    301.14/415.57 = 163.14/x
  3. Step 3: Cross multiply
    301.14x = 415.57 × 163.14
  4. Step 4: Simplify right side
    301.14x = 67,796.09
  5. Step 5: Solve for x
    x = 67,796.09/301.14
  6. Step 6: Final answer
    x = 225.13

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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.