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Finding the Fourth Proportional to 301.38, 415.85 and 181.72

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Solution

The fourth proportional to 301.38, 415.85 and 181.72 is: 250.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.38 : 415.85 = 181.72 : x
  2. Step 2: Convert to fraction form
    301.38/415.85 = 181.72/x
  3. Step 3: Cross multiply
    301.38x = 415.85 × 181.72
  4. Step 4: Simplify right side
    301.38x = 75,568.26
  5. Step 5: Solve for x
    x = 75,568.26/301.38
  6. Step 6: Final answer
    x = 250.74

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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.