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Finding the Fourth Proportional to 249.99, 344.91 and 171.32

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Solution

The fourth proportional to 249.99, 344.91 and 171.32 is: 236.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.99 : 344.91 = 171.32 : x
  2. Step 2: Convert to fraction form
    249.99/344.91 = 171.32/x
  3. Step 3: Cross multiply
    249.99x = 344.91 × 171.32
  4. Step 4: Simplify right side
    249.99x = 59,087.94
  5. Step 5: Solve for x
    x = 59,087.94/249.99
  6. Step 6: Final answer
    x = 236.36

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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.