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Finding the Fourth Proportional to 174.49, 240.09 and 170.39

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Solution

The fourth proportional to 174.49, 240.09 and 170.39 is: 234.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.49 : 240.09 = 170.39 : x
  2. Step 2: Convert to fraction form
    174.49/240.09 = 170.39/x
  3. Step 3: Cross multiply
    174.49x = 240.09 × 170.39
  4. Step 4: Simplify right side
    174.49x = 40,908.94
  5. Step 5: Solve for x
    x = 40,908.94/174.49
  6. Step 6: Final answer
    x = 234.45

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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.