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Finding the Fourth Proportional to 254.39, 381.64 and 162.96

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Solution

The fourth proportional to 254.39, 381.64 and 162.96 is: 244.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.39 : 381.64 = 162.96 : x
  2. Step 2: Convert to fraction form
    254.39/381.64 = 162.96/x
  3. Step 3: Cross multiply
    254.39x = 381.64 × 162.96
  4. Step 4: Simplify right side
    254.39x = 62,192.05
  5. Step 5: Solve for x
    x = 62,192.05/254.39
  6. Step 6: Final answer
    x = 244.48

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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.