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Finding the Third Proportional to 715.69 and 1,264.88

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Solution

The third proportional to 715.69 and 1,264.88 is: 2,235.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.69 : 1,264.88 = 1,264.88 : x
  2. Step 2: Convert to fraction form
    715.69/1,264.88 = 1,264.88/x
  3. Step 3: Cross multiply
    715.69x = 1,264.88 × 1,264.88
  4. Step 4: Simplify right side
    715.69x = 1,599,908.77
  5. Step 5: Solve for x
    x = 1,599,908.77/715.69
  6. Step 6: Final answer
    x = 2,235.49

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.