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Finding the Fourth Proportional to 629.40, 937.53 and 626.43

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Solution

The fourth proportional to 629.40, 937.53 and 626.43 is: 933.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.40 : 937.53 = 626.43 : x
  2. Step 2: Convert to fraction form
    629.40/937.53 = 626.43/x
  3. Step 3: Cross multiply
    629.40x = 937.53 × 626.43
  4. Step 4: Simplify right side
    629.40x = 587,296.92
  5. Step 5: Solve for x
    x = 587,296.92/629.40
  6. Step 6: Final answer
    x = 933.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.