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Finding the Third Proportional to 317.63 and 365.63

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Solution

The third proportional to 317.63 and 365.63 is: 420.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.63 : 365.63 = 365.63 : x
  2. Step 2: Convert to fraction form
    317.63/365.63 = 365.63/x
  3. Step 3: Cross multiply
    317.63x = 365.63 × 365.63
  4. Step 4: Simplify right side
    317.63x = 133,681.64
  5. Step 5: Solve for x
    x = 133,681.64/317.63
  6. Step 6: Final answer
    x = 420.88

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.