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Finding the Third Proportional to 257.34 and 377.44

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Solution

The third proportional to 257.34 and 377.44 is: 553.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    257.34 : 377.44 = 377.44 : x
  2. Step 2: Convert to fraction form
    257.34/377.44 = 377.44/x
  3. Step 3: Cross multiply
    257.34x = 377.44 × 377.44
  4. Step 4: Simplify right side
    257.34x = 142,459.07
  5. Step 5: Solve for x
    x = 142,459.07/257.34
  6. Step 6: Final answer
    x = 553.58

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.