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Finding the Fourth Proportional to 444.53, 666.79 and 115.44

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Solution

The fourth proportional to 444.53, 666.79 and 115.44 is: 173.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.53 : 666.79 = 115.44 : x
  2. Step 2: Convert to fraction form
    444.53/666.79 = 115.44/x
  3. Step 3: Cross multiply
    444.53x = 666.79 × 115.44
  4. Step 4: Simplify right side
    444.53x = 76,977.42
  5. Step 5: Solve for x
    x = 76,977.42/444.53
  6. Step 6: Final answer
    x = 173.17

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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.