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Finding the Third Proportional to 400.75 and 464.88

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Solution

The third proportional to 400.75 and 464.88 is: 539.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.75 : 464.88 = 464.88 : x
  2. Step 2: Convert to fraction form
    400.75/464.88 = 464.88/x
  3. Step 3: Cross multiply
    400.75x = 464.88 × 464.88
  4. Step 4: Simplify right side
    400.75x = 216,108.77
  5. Step 5: Solve for x
    x = 216,108.77/400.75
  6. Step 6: Final answer
    x = 539.26

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.