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Finding the Third Proportional to 330.94 and 486.19

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Solution

The third proportional to 330.94 and 486.19 is: 714.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.94 : 486.19 = 486.19 : x
  2. Step 2: Convert to fraction form
    330.94/486.19 = 486.19/x
  3. Step 3: Cross multiply
    330.94x = 486.19 × 486.19
  4. Step 4: Simplify right side
    330.94x = 236,378.29
  5. Step 5: Solve for x
    x = 236,378.29/330.94
  6. Step 6: Final answer
    x = 714.27

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.