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Finding the Fourth Proportional to 629.95, 944.79 and 196.87

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Solution

The fourth proportional to 629.95, 944.79 and 196.87 is: 295.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.95 : 944.79 = 196.87 : x
  2. Step 2: Convert to fraction form
    629.95/944.79 = 196.87/x
  3. Step 3: Cross multiply
    629.95x = 944.79 × 196.87
  4. Step 4: Simplify right side
    629.95x = 186,000.81
  5. Step 5: Solve for x
    x = 186,000.81/629.95
  6. Step 6: Final answer
    x = 295.26

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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.