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Finding the Third Proportional to 115.19 and 245.84

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Solution

The third proportional to 115.19 and 245.84 is: 524.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.19 : 245.84 = 245.84 : x
  2. Step 2: Convert to fraction form
    115.19/245.84 = 245.84/x
  3. Step 3: Cross multiply
    115.19x = 245.84 × 245.84
  4. Step 4: Simplify right side
    115.19x = 60,439.15
  5. Step 5: Solve for x
    x = 60,439.15/115.19
  6. Step 6: Final answer
    x = 524.70

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.