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Finding the Fourth Proportional to 301.22, 415.58 and 176.78

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Solution

The fourth proportional to 301.22, 415.58 and 176.78 is: 243.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.22 : 415.58 = 176.78 : x
  2. Step 2: Convert to fraction form
    301.22/415.58 = 176.78/x
  3. Step 3: Cross multiply
    301.22x = 415.58 × 176.78
  4. Step 4: Simplify right side
    301.22x = 73,467.38
  5. Step 5: Solve for x
    x = 73,467.38/301.22
  6. Step 6: Final answer
    x = 243.90

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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.