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Finding the Third Proportional to 784.69 and 1,130.81

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Solution

The third proportional to 784.69 and 1,130.81 is: 1,629.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    784.69 : 1,130.81 = 1,130.81 : x
  2. Step 2: Convert to fraction form
    784.69/1,130.81 = 1,130.81/x
  3. Step 3: Cross multiply
    784.69x = 1,130.81 × 1,130.81
  4. Step 4: Simplify right side
    784.69x = 1,278,736.91
  5. Step 5: Solve for x
    x = 1,278,736.91/784.69
  6. Step 6: Final answer
    x = 1,629.61

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.