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Finding the Fourth Proportional to 448.44, 666.87 and 443.64

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Solution

The fourth proportional to 448.44, 666.87 and 443.64 is: 659.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.44 : 666.87 = 443.64 : x
  2. Step 2: Convert to fraction form
    448.44/666.87 = 443.64/x
  3. Step 3: Cross multiply
    448.44x = 666.87 × 443.64
  4. Step 4: Simplify right side
    448.44x = 295,850.21
  5. Step 5: Solve for x
    x = 295,850.21/448.44
  6. Step 6: Final answer
    x = 659.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.