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Finding the Fourth Proportional to 629.50, 943.62 and 263.80

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Solution

The fourth proportional to 629.50, 943.62 and 263.80 is: 395.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.50 : 943.62 = 263.80 : x
  2. Step 2: Convert to fraction form
    629.50/943.62 = 263.80/x
  3. Step 3: Cross multiply
    629.50x = 943.62 × 263.80
  4. Step 4: Simplify right side
    629.50x = 248,926.96
  5. Step 5: Solve for x
    x = 248,926.96/629.50
  6. Step 6: Final answer
    x = 395.44

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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.