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Finding the Fourth Proportional to 629.49, 943.90 and 369.55

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Solution

The fourth proportional to 629.49, 943.90 and 369.55 is: 554.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.49 : 943.90 = 369.55 : x
  2. Step 2: Convert to fraction form
    629.49/943.90 = 369.55/x
  3. Step 3: Cross multiply
    629.49x = 943.90 × 369.55
  4. Step 4: Simplify right side
    629.49x = 348,818.25
  5. Step 5: Solve for x
    x = 348,818.25/629.49
  6. Step 6: Final answer
    x = 554.13

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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.