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Finding the Fourth Proportional to 225.22, 311.10 and 181.72

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Solution

The fourth proportional to 225.22, 311.10 and 181.72 is: 251.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.22 : 311.10 = 181.72 : x
  2. Step 2: Convert to fraction form
    225.22/311.10 = 181.72/x
  3. Step 3: Cross multiply
    225.22x = 311.10 × 181.72
  4. Step 4: Simplify right side
    225.22x = 56,533.09
  5. Step 5: Solve for x
    x = 56,533.09/225.22
  6. Step 6: Final answer
    x = 251.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.