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Finding the Third Proportional to 253.69 and 549.19

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Solution

The third proportional to 253.69 and 549.19 is: 1,188.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.69 : 549.19 = 549.19 : x
  2. Step 2: Convert to fraction form
    253.69/549.19 = 549.19/x
  3. Step 3: Cross multiply
    253.69x = 549.19 × 549.19
  4. Step 4: Simplify right side
    253.69x = 301,606.91
  5. Step 5: Solve for x
    x = 301,606.91/253.69
  6. Step 6: Final answer
    x = 1,188.89

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.