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Finding the Fourth Proportional to 173.03, 260.82 and 161.28

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Solution

The fourth proportional to 173.03, 260.82 and 161.28 is: 243.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.03 : 260.82 = 161.28 : x
  2. Step 2: Convert to fraction form
    173.03/260.82 = 161.28/x
  3. Step 3: Cross multiply
    173.03x = 260.82 × 161.28
  4. Step 4: Simplify right side
    173.03x = 42,065.05
  5. Step 5: Solve for x
    x = 42,065.05/173.03
  6. Step 6: Final answer
    x = 243.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.