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Finding the Fourth Proportional to 254.13, 380.97 and 231.56

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Solution

The fourth proportional to 254.13, 380.97 and 231.56 is: 347.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.13 : 380.97 = 231.56 : x
  2. Step 2: Convert to fraction form
    254.13/380.97 = 231.56/x
  3. Step 3: Cross multiply
    254.13x = 380.97 × 231.56
  4. Step 4: Simplify right side
    254.13x = 88,215.51
  5. Step 5: Solve for x
    x = 88,215.51/254.13
  6. Step 6: Final answer
    x = 347.13

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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.