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Finding the Third Proportional to 113.38 and 245.74

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Solution

The third proportional to 113.38 and 245.74 is: 532.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.38 : 245.74 = 245.74 : x
  2. Step 2: Convert to fraction form
    113.38/245.74 = 245.74/x
  3. Step 3: Cross multiply
    113.38x = 245.74 × 245.74
  4. Step 4: Simplify right side
    113.38x = 60,389.22
  5. Step 5: Solve for x
    x = 60,389.22/113.38
  6. Step 6: Final answer
    x = 532.63

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.