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Finding the Third Proportional to 238.50 and 356.81

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Solution

The third proportional to 238.50 and 356.81 is: 533.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.50 : 356.81 = 356.81 : x
  2. Step 2: Convert to fraction form
    238.50/356.81 = 356.81/x
  3. Step 3: Cross multiply
    238.50x = 356.81 × 356.81
  4. Step 4: Simplify right side
    238.50x = 127,315.16
  5. Step 5: Solve for x
    x = 127,315.16/238.50
  6. Step 6: Final answer
    x = 533.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.