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Finding the Fourth Proportional to 247.30, 340.39 and 173.49

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Solution

The fourth proportional to 247.30, 340.39 and 173.49 is: 238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.30 : 340.39 = 173.49 : x
  2. Step 2: Convert to fraction form
    247.30/340.39 = 173.49/x
  3. Step 3: Cross multiply
    247.30x = 340.39 × 173.49
  4. Step 4: Simplify right side
    247.30x = 59,054.87
  5. Step 5: Solve for x
    x = 59,054.87/247.30
  6. Step 6: Final answer
    x = 238.80

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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.