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Finding the Fourth Proportional to 172.05, 258.18 and 95.06

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Solution

The fourth proportional to 172.05, 258.18 and 95.06 is: 142.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.05 : 258.18 = 95.06 : x
  2. Step 2: Convert to fraction form
    172.05/258.18 = 95.06/x
  3. Step 3: Cross multiply
    172.05x = 258.18 × 95.06
  4. Step 4: Simplify right side
    172.05x = 24,542.59
  5. Step 5: Solve for x
    x = 24,542.59/172.05
  6. Step 6: Final answer
    x = 142.65

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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.