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Finding the Fourth Proportional to 629.03, 943.93 and 429.13

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Solution

The fourth proportional to 629.03, 943.93 and 429.13 is: 643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.03 : 943.93 = 429.13 : x
  2. Step 2: Convert to fraction form
    629.03/943.93 = 429.13/x
  3. Step 3: Cross multiply
    629.03x = 943.93 × 429.13
  4. Step 4: Simplify right side
    629.03x = 405,063.96
  5. Step 5: Solve for x
    x = 405,063.96/629.03
  6. Step 6: Final answer
    x = 643.95

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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.