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Finding the Fourth Proportional to 344.74, 517.34 and 171.51

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Solution

The fourth proportional to 344.74, 517.34 and 171.51 is: 257.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.74 : 517.34 = 171.51 : x
  2. Step 2: Convert to fraction form
    344.74/517.34 = 171.51/x
  3. Step 3: Cross multiply
    344.74x = 517.34 × 171.51
  4. Step 4: Simplify right side
    344.74x = 88,728.98
  5. Step 5: Solve for x
    x = 88,728.98/344.74
  6. Step 6: Final answer
    x = 257.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.