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Finding the Fourth Proportional to 254.63, 379.62 and 239.13

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Solution

The fourth proportional to 254.63, 379.62 and 239.13 is: 356.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.63 : 379.62 = 239.13 : x
  2. Step 2: Convert to fraction form
    254.63/379.62 = 239.13/x
  3. Step 3: Cross multiply
    254.63x = 379.62 × 239.13
  4. Step 4: Simplify right side
    254.63x = 90,778.53
  5. Step 5: Solve for x
    x = 90,778.53/254.63
  6. Step 6: Final answer
    x = 356.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.