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Finding the Fourth Proportional to 173.56, 260.25 and 82.18

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Solution

The fourth proportional to 173.56, 260.25 and 82.18 is: 123.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.56 : 260.25 = 82.18 : x
  2. Step 2: Convert to fraction form
    173.56/260.25 = 82.18/x
  3. Step 3: Cross multiply
    173.56x = 260.25 × 82.18
  4. Step 4: Simplify right side
    173.56x = 21,387.35
  5. Step 5: Solve for x
    x = 21,387.35/173.56
  6. Step 6: Final answer
    x = 123.23

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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.