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Finding the Fourth Proportional to 629.44, 944.26 and 547.70

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Solution

The fourth proportional to 629.44, 944.26 and 547.70 is: 821.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.44 : 944.26 = 547.70 : x
  2. Step 2: Convert to fraction form
    629.44/944.26 = 547.70/x
  3. Step 3: Cross multiply
    629.44x = 944.26 × 547.70
  4. Step 4: Simplify right side
    629.44x = 517,165.11
  5. Step 5: Solve for x
    x = 517,165.11/629.44
  6. Step 6: Final answer
    x = 821.63

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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.