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Finding the Fourth Proportional to 254.41, 350.85 and 161.05

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Solution

The fourth proportional to 254.41, 350.85 and 161.05 is: 222.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.41 : 350.85 = 161.05 : x
  2. Step 2: Convert to fraction form
    254.41/350.85 = 161.05/x
  3. Step 3: Cross multiply
    254.41x = 350.85 × 161.05
  4. Step 4: Simplify right side
    254.41x = 56,504.39
  5. Step 5: Solve for x
    x = 56,504.39/254.41
  6. Step 6: Final answer
    x = 222.10

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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.