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Finding the Third Proportional to 557.16 and 1,218.09

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Solution

The third proportional to 557.16 and 1,218.09 is: 2,663.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.16 : 1,218.09 = 1,218.09 : x
  2. Step 2: Convert to fraction form
    557.16/1,218.09 = 1,218.09/x
  3. Step 3: Cross multiply
    557.16x = 1,218.09 × 1,218.09
  4. Step 4: Simplify right side
    557.16x = 1,483,752.38
  5. Step 5: Solve for x
    x = 1,483,752.38/557.16
  6. Step 6: Final answer
    x = 2,663.08

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.