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Finding the Third Proportional to 331.88 and 507.38

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Solution

The third proportional to 331.88 and 507.38 is: 775.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.88 : 507.38 = 507.38 : x
  2. Step 2: Convert to fraction form
    331.88/507.38 = 507.38/x
  3. Step 3: Cross multiply
    331.88x = 507.38 × 507.38
  4. Step 4: Simplify right side
    331.88x = 257,429.39
  5. Step 5: Solve for x
    x = 257,429.39/331.88
  6. Step 6: Final answer
    x = 775.68

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.