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Finding the Fourth Proportional to 304.26, 419.89 and 171.49

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Solution

The fourth proportional to 304.26, 419.89 and 171.49 is: 236.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.26 : 419.89 = 171.49 : x
  2. Step 2: Convert to fraction form
    304.26/419.89 = 171.49/x
  3. Step 3: Cross multiply
    304.26x = 419.89 × 171.49
  4. Step 4: Simplify right side
    304.26x = 72,006.94
  5. Step 5: Solve for x
    x = 72,006.94/304.26
  6. Step 6: Final answer
    x = 236.66

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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.