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Finding the Fourth Proportional to 173.97, 257.40 and 173.43

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Solution

The fourth proportional to 173.97, 257.40 and 173.43 is: 256.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.97 : 257.40 = 173.43 : x
  2. Step 2: Convert to fraction form
    173.97/257.40 = 173.43/x
  3. Step 3: Cross multiply
    173.97x = 257.40 × 173.43
  4. Step 4: Simplify right side
    173.97x = 44,640.88
  5. Step 5: Solve for x
    x = 44,640.88/173.97
  6. Step 6: Final answer
    x = 256.60

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.