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Finding the Third Proportional to 715.50 and 1,520.63

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Solution

The third proportional to 715.50 and 1,520.63 is: 3,231.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.50 : 1,520.63 = 1,520.63 : x
  2. Step 2: Convert to fraction form
    715.50/1,520.63 = 1,520.63/x
  3. Step 3: Cross multiply
    715.50x = 1,520.63 × 1,520.63
  4. Step 4: Simplify right side
    715.50x = 2,312,300.39
  5. Step 5: Solve for x
    x = 2,312,300.39/715.50
  6. Step 6: Final answer
    x = 3,231.73

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.