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Finding the Third Proportional to 711.75 and 1,646.63

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Solution

The third proportional to 711.75 and 1,646.63 is: 3,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.75 : 1,646.63 = 1,646.63 : x
  2. Step 2: Convert to fraction form
    711.75/1,646.63 = 1,646.63/x
  3. Step 3: Cross multiply
    711.75x = 1,646.63 × 1,646.63
  4. Step 4: Simplify right side
    711.75x = 2,711,373.89
  5. Step 5: Solve for x
    x = 2,711,373.89/711.75
  6. Step 6: Final answer
    x = 3,809.45

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.