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Finding the Third Proportional to 247 and 361.25

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Solution

The third proportional to 247 and 361.25 is: 528.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    247 : 361.25 = 361.25 : x
  2. Step 2: Convert to fraction form
    247/361.25 = 361.25/x
  3. Step 3: Cross multiply
    247x = 361.25 × 361.25
  4. Step 4: Simplify right side
    247x = 130,501.56
  5. Step 5: Solve for x
    x = 130,501.56/247
  6. Step 6: Final answer
    x = 528.35

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.