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Finding the Third Proportional to 348.75 and 492.38

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Solution

The third proportional to 348.75 and 492.38 is: 695.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.75 : 492.38 = 492.38 : x
  2. Step 2: Convert to fraction form
    348.75/492.38 = 492.38/x
  3. Step 3: Cross multiply
    348.75x = 492.38 × 492.38
  4. Step 4: Simplify right side
    348.75x = 242,433.14
  5. Step 5: Solve for x
    x = 242,433.14/348.75
  6. Step 6: Final answer
    x = 695.15

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.