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Finding the Third Proportional to 669.88 and 1,065.94

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Solution

The third proportional to 669.88 and 1,065.94 is: 1,696.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.88 : 1,065.94 = 1,065.94 : x
  2. Step 2: Convert to fraction form
    669.88/1,065.94 = 1,065.94/x
  3. Step 3: Cross multiply
    669.88x = 1,065.94 × 1,065.94
  4. Step 4: Simplify right side
    669.88x = 1,136,222.75
  5. Step 5: Solve for x
    x = 1,136,222.75/669.88
  6. Step 6: Final answer
    x = 1,696.17

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.