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Finding the Third Proportional to 301 and 431.75

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Solution

The third proportional to 301 and 431.75 is: 619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    301 : 431.75 = 431.75 : x
  2. Step 2: Convert to fraction form
    301/431.75 = 431.75/x
  3. Step 3: Cross multiply
    301x = 431.75 × 431.75
  4. Step 4: Simplify right side
    301x = 186,408.06
  5. Step 5: Solve for x
    x = 186,408.06/301
  6. Step 6: Final answer
    x = 619.30

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.