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Finding the Third Proportional to 768.87 and 1,127.67

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Solution

The third proportional to 768.87 and 1,127.67 is: 1,653.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.87 : 1,127.67 = 1,127.67 : x
  2. Step 2: Convert to fraction form
    768.87/1,127.67 = 1,127.67/x
  3. Step 3: Cross multiply
    768.87x = 1,127.67 × 1,127.67
  4. Step 4: Simplify right side
    768.87x = 1,271,643.86
  5. Step 5: Solve for x
    x = 1,271,643.86/768.87
  6. Step 6: Final answer
    x = 1,653.92

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.