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Finding the Fourth Proportional to 173.15, 258.02 and 168.20

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Solution

The fourth proportional to 173.15, 258.02 and 168.20 is: 250.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.15 : 258.02 = 168.20 : x
  2. Step 2: Convert to fraction form
    173.15/258.02 = 168.20/x
  3. Step 3: Cross multiply
    173.15x = 258.02 × 168.20
  4. Step 4: Simplify right side
    173.15x = 43,396.83
  5. Step 5: Solve for x
    x = 43,396.83/173.15
  6. Step 6: Final answer
    x = 250.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.