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Finding the Fourth Proportional to 254.42, 350.94 and 161.00

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Solution

The fourth proportional to 254.42, 350.94 and 161.00 is: 222.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.42 : 350.94 = 161.00 : x
  2. Step 2: Convert to fraction form
    254.42/350.94 = 161.00/x
  3. Step 3: Cross multiply
    254.42x = 350.94 × 161.00
  4. Step 4: Simplify right side
    254.42x = 56,499.59
  5. Step 5: Solve for x
    x = 56,499.59/254.42
  6. Step 6: Final answer
    x = 222.08

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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.