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Finding the Third Proportional to 273 and 431.75

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Solution

The third proportional to 273 and 431.75 is: 682.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    273 : 431.75 = 431.75 : x
  2. Step 2: Convert to fraction form
    273/431.75 = 431.75/x
  3. Step 3: Cross multiply
    273x = 431.75 × 431.75
  4. Step 4: Simplify right side
    273x = 186,408.06
  5. Step 5: Solve for x
    x = 186,408.06/273
  6. Step 6: Final answer
    x = 682.81

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.