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Finding the Third Proportional to 557.72 and 1,318.92

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Solution

The third proportional to 557.72 and 1,318.92 is: 3,119.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.72 : 1,318.92 = 1,318.92 : x
  2. Step 2: Convert to fraction form
    557.72/1,318.92 = 1,318.92/x
  3. Step 3: Cross multiply
    557.72x = 1,318.92 × 1,318.92
  4. Step 4: Simplify right side
    557.72x = 1,739,554.91
  5. Step 5: Solve for x
    x = 1,739,554.91/557.72
  6. Step 6: Final answer
    x = 3,119.05

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.