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Finding the Third Proportional to 358.63 and 489.44

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Solution

The third proportional to 358.63 and 489.44 is: 667.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.63 : 489.44 = 489.44 : x
  2. Step 2: Convert to fraction form
    358.63/489.44 = 489.44/x
  3. Step 3: Cross multiply
    358.63x = 489.44 × 489.44
  4. Step 4: Simplify right side
    358.63x = 239,549.07
  5. Step 5: Solve for x
    x = 239,549.07/358.63
  6. Step 6: Final answer
    x = 667.97

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.