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Finding the Third Proportional to 203.91 and 307.76

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Solution

The third proportional to 203.91 and 307.76 is: 464.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.91 : 307.76 = 307.76 : x
  2. Step 2: Convert to fraction form
    203.91/307.76 = 307.76/x
  3. Step 3: Cross multiply
    203.91x = 307.76 × 307.76
  4. Step 4: Simplify right side
    203.91x = 94,714.87
  5. Step 5: Solve for x
    x = 94,714.87/203.91
  6. Step 6: Final answer
    x = 464.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.