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Finding the Third Proportional to 552.87 and 783.63

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Solution

The third proportional to 552.87 and 783.63 is: 1,110.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.87 : 783.63 = 783.63 : x
  2. Step 2: Convert to fraction form
    552.87/783.63 = 783.63/x
  3. Step 3: Cross multiply
    552.87x = 783.63 × 783.63
  4. Step 4: Simplify right side
    552.87x = 614,080.38
  5. Step 5: Solve for x
    x = 614,080.38/552.87
  6. Step 6: Final answer
    x = 1,110.72

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.