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Finding the Third Proportional to 310 and 343.75

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Solution

The third proportional to 310 and 343.75 is: 381.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    310 : 343.75 = 343.75 : x
  2. Step 2: Convert to fraction form
    310/343.75 = 343.75/x
  3. Step 3: Cross multiply
    310x = 343.75 × 343.75
  4. Step 4: Simplify right side
    310x = 118,164.06
  5. Step 5: Solve for x
    x = 118,164.06/310
  6. Step 6: Final answer
    x = 381.17

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These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.