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Finding the Fourth Proportional to 629.04, 868.40 and 443.53

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Solution

The fourth proportional to 629.04, 868.40 and 443.53 is: 612.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.04 : 868.40 = 443.53 : x
  2. Step 2: Convert to fraction form
    629.04/868.40 = 443.53/x
  3. Step 3: Cross multiply
    629.04x = 868.40 × 443.53
  4. Step 4: Simplify right side
    629.04x = 385,161.45
  5. Step 5: Solve for x
    x = 385,161.45/629.04
  6. Step 6: Final answer
    x = 612.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.