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Finding the Third Proportional to 245.06 and 279.38

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Solution

The third proportional to 245.06 and 279.38 is: 318.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.06 : 279.38 = 279.38 : x
  2. Step 2: Convert to fraction form
    245.06/279.38 = 279.38/x
  3. Step 3: Cross multiply
    245.06x = 279.38 × 279.38
  4. Step 4: Simplify right side
    245.06x = 78,050.39
  5. Step 5: Solve for x
    x = 78,050.39/245.06
  6. Step 6: Final answer
    x = 318.49

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.