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Finding the Third Proportional to 356.50 and 486

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Solution

The third proportional to 356.50 and 486 is: 662.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.50 : 486 = 486 : x
  2. Step 2: Convert to fraction form
    356.50/486 = 486/x
  3. Step 3: Cross multiply
    356.50x = 486 × 486
  4. Step 4: Simplify right side
    356.50x = 236,196
  5. Step 5: Solve for x
    x = 236,196/356.50
  6. Step 6: Final answer
    x = 662.54

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These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.