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Finding the Third Proportional to 400 and 599.75

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Solution

The third proportional to 400 and 599.75 is: 899.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    400 : 599.75 = 599.75 : x
  2. Step 2: Convert to fraction form
    400/599.75 = 599.75/x
  3. Step 3: Cross multiply
    400x = 599.75 × 599.75
  4. Step 4: Simplify right side
    400x = 359,700.06
  5. Step 5: Solve for x
    x = 359,700.06/400
  6. Step 6: Final answer
    x = 899.25

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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.