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Finding the Fourth Proportional to 483.22, 666.50 and 306

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Solution

The fourth proportional to 483.22, 666.50 and 306 is: 422.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.22 : 666.50 = 306 : x
  2. Step 2: Convert to fraction form
    483.22/666.50 = 306/x
  3. Step 3: Cross multiply
    483.22x = 666.50 × 306
  4. Step 4: Simplify right side
    483.22x = 203,949
  5. Step 5: Solve for x
    x = 203,949/483.22
  6. Step 6: Final answer
    x = 422.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.