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Finding the Fourth Proportional to 254.48, 351.58 and 212.96

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Solution

The fourth proportional to 254.48, 351.58 and 212.96 is: 294.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.48 : 351.58 = 212.96 : x
  2. Step 2: Convert to fraction form
    254.48/351.58 = 212.96/x
  3. Step 3: Cross multiply
    254.48x = 351.58 × 212.96
  4. Step 4: Simplify right side
    254.48x = 74,872.48
  5. Step 5: Solve for x
    x = 74,872.48/254.48
  6. Step 6: Final answer
    x = 294.22

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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.