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Finding the Third Proportional to 254.39 and 383.48

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Solution

The third proportional to 254.39 and 383.48 is: 578.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.39 : 383.48 = 383.48 : x
  2. Step 2: Convert to fraction form
    254.39/383.48 = 383.48/x
  3. Step 3: Cross multiply
    254.39x = 383.48 × 383.48
  4. Step 4: Simplify right side
    254.39x = 147,060.27
  5. Step 5: Solve for x
    x = 147,060.27/254.39
  6. Step 6: Final answer
    x = 578.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.