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Finding the Fourth Proportional to 304.11, 419.67 and 171.36

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Solution

The fourth proportional to 304.11, 419.67 and 171.36 is: 236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.11 : 419.67 = 171.36 : x
  2. Step 2: Convert to fraction form
    304.11/419.67 = 171.36/x
  3. Step 3: Cross multiply
    304.11x = 419.67 × 171.36
  4. Step 4: Simplify right side
    304.11x = 71,914.65
  5. Step 5: Solve for x
    x = 71,914.65/304.11
  6. Step 6: Final answer
    x = 236.48

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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.