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Finding the Third Proportional to 155.79 and 244.42

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Solution

The third proportional to 155.79 and 244.42 is: 383.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.79 : 244.42 = 244.42 : x
  2. Step 2: Convert to fraction form
    155.79/244.42 = 244.42/x
  3. Step 3: Cross multiply
    155.79x = 244.42 × 244.42
  4. Step 4: Simplify right side
    155.79x = 59,743.01
  5. Step 5: Solve for x
    x = 59,743.01/155.79
  6. Step 6: Final answer
    x = 383.48

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.