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Finding the Fourth Proportional to 173.17, 259.41 and 115.22

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Solution

The fourth proportional to 173.17, 259.41 and 115.22 is: 172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.17 : 259.41 = 115.22 : x
  2. Step 2: Convert to fraction form
    173.17/259.41 = 115.22/x
  3. Step 3: Cross multiply
    173.17x = 259.41 × 115.22
  4. Step 4: Simplify right side
    173.17x = 29,889.22
  5. Step 5: Solve for x
    x = 29,889.22/173.17
  6. Step 6: Final answer
    x = 172.60

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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.