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Finding the Fourth Proportional to 302.75, 417.79 and 169.96

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Solution

The fourth proportional to 302.75, 417.79 and 169.96 is: 234.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.75 : 417.79 = 169.96 : x
  2. Step 2: Convert to fraction form
    302.75/417.79 = 169.96/x
  3. Step 3: Cross multiply
    302.75x = 417.79 × 169.96
  4. Step 4: Simplify right side
    302.75x = 71,007.59
  5. Step 5: Solve for x
    x = 71,007.59/302.75
  6. Step 6: Final answer
    x = 234.54

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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.