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Finding the Fourth Proportional to 254.36, 380.97 and 144.42

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Solution

The fourth proportional to 254.36, 380.97 and 144.42 is: 216.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.36 : 380.97 = 144.42 : x
  2. Step 2: Convert to fraction form
    254.36/380.97 = 144.42/x
  3. Step 3: Cross multiply
    254.36x = 380.97 × 144.42
  4. Step 4: Simplify right side
    254.36x = 55,018.26
  5. Step 5: Solve for x
    x = 55,018.26/254.36
  6. Step 6: Final answer
    x = 216.30

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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.