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Finding the Fourth Proportional to 251.71, 347.62 and 173.23

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Solution

The fourth proportional to 251.71, 347.62 and 173.23 is: 239.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.71 : 347.62 = 173.23 : x
  2. Step 2: Convert to fraction form
    251.71/347.62 = 173.23/x
  3. Step 3: Cross multiply
    251.71x = 347.62 × 173.23
  4. Step 4: Simplify right side
    251.71x = 60,218.45
  5. Step 5: Solve for x
    x = 60,218.45/251.71
  6. Step 6: Final answer
    x = 239.24

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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.