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Finding the Third Proportional to 707.91 and 1,501.78

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Solution

The third proportional to 707.91 and 1,501.78 is: 3,185.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.91 : 1,501.78 = 1,501.78 : x
  2. Step 2: Convert to fraction form
    707.91/1,501.78 = 1,501.78/x
  3. Step 3: Cross multiply
    707.91x = 1,501.78 × 1,501.78
  4. Step 4: Simplify right side
    707.91x = 2,255,346.92
  5. Step 5: Solve for x
    x = 2,255,346.92/707.91
  6. Step 6: Final answer
    x = 3,185.94

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.