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Finding the Fourth Proportional to 174.32, 242.06 and 172.88

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Solution

The fourth proportional to 174.32, 242.06 and 172.88 is: 240.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.32 : 242.06 = 172.88 : x
  2. Step 2: Convert to fraction form
    174.32/242.06 = 172.88/x
  3. Step 3: Cross multiply
    174.32x = 242.06 × 172.88
  4. Step 4: Simplify right side
    174.32x = 41,847.33
  5. Step 5: Solve for x
    x = 41,847.33/174.32
  6. Step 6: Final answer
    x = 240.06

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.