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Finding the Fourth Proportional to 444.11, 666.07 and 422.15

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Solution

The fourth proportional to 444.11, 666.07 and 422.15 is: 633.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.11 : 666.07 = 422.15 : x
  2. Step 2: Convert to fraction form
    444.11/666.07 = 422.15/x
  3. Step 3: Cross multiply
    444.11x = 666.07 × 422.15
  4. Step 4: Simplify right side
    444.11x = 281,181.45
  5. Step 5: Solve for x
    x = 281,181.45/444.11
  6. Step 6: Final answer
    x = 633.13

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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.