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Finding the Third Proportional to 607.69 and 660.84

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Solution

The third proportional to 607.69 and 660.84 is: 718.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.69 : 660.84 = 660.84 : x
  2. Step 2: Convert to fraction form
    607.69/660.84 = 660.84/x
  3. Step 3: Cross multiply
    607.69x = 660.84 × 660.84
  4. Step 4: Simplify right side
    607.69x = 436,714.46
  5. Step 5: Solve for x
    x = 436,714.46/607.69
  6. Step 6: Final answer
    x = 718.65

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.