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Finding the Fourth Proportional to 301.13, 415.23 and 238.86

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Solution

The fourth proportional to 301.13, 415.23 and 238.86 is: 329.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.13 : 415.23 = 238.86 : x
  2. Step 2: Convert to fraction form
    301.13/415.23 = 238.86/x
  3. Step 3: Cross multiply
    301.13x = 415.23 × 238.86
  4. Step 4: Simplify right side
    301.13x = 99,181.84
  5. Step 5: Solve for x
    x = 99,181.84/301.13
  6. Step 6: Final answer
    x = 329.37

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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.