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Finding the Third Proportional to 185.63 and 279.28

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Solution

The third proportional to 185.63 and 279.28 is: 420.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.63 : 279.28 = 279.28 : x
  2. Step 2: Convert to fraction form
    185.63/279.28 = 279.28/x
  3. Step 3: Cross multiply
    185.63x = 279.28 × 279.28
  4. Step 4: Simplify right side
    185.63x = 77,998.02
  5. Step 5: Solve for x
    x = 77,998.02/185.63
  6. Step 6: Final answer
    x = 420.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.