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Finding the Third Proportional to 336.38 and 509.63

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Solution

The third proportional to 336.38 and 509.63 is: 772.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.38 : 509.63 = 509.63 : x
  2. Step 2: Convert to fraction form
    336.38/509.63 = 509.63/x
  3. Step 3: Cross multiply
    336.38x = 509.63 × 509.63
  4. Step 4: Simplify right side
    336.38x = 259,717.64
  5. Step 5: Solve for x
    x = 259,717.64/336.38
  6. Step 6: Final answer
    x = 772.11

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.