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Finding the Third Proportional to 288.09 and 624.94

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Solution

The third proportional to 288.09 and 624.94 is: 1,355.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.09 : 624.94 = 624.94 : x
  2. Step 2: Convert to fraction form
    288.09/624.94 = 624.94/x
  3. Step 3: Cross multiply
    288.09x = 624.94 × 624.94
  4. Step 4: Simplify right side
    288.09x = 390,546.88
  5. Step 5: Solve for x
    x = 390,546.88/288.09
  6. Step 6: Final answer
    x = 1,355.62

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.