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Finding the Third Proportional to 722.91 and 1,528.78

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Solution

The third proportional to 722.91 and 1,528.78 is: 3,233.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.91 : 1,528.78 = 1,528.78 : x
  2. Step 2: Convert to fraction form
    722.91/1,528.78 = 1,528.78/x
  3. Step 3: Cross multiply
    722.91x = 1,528.78 × 1,528.78
  4. Step 4: Simplify right side
    722.91x = 2,337,172.11
  5. Step 5: Solve for x
    x = 2,337,172.11/722.91
  6. Step 6: Final answer
    x = 3,233.02

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.