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Finding the Fourth Proportional to 627.93, 942.09 and 445.68

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Solution

The fourth proportional to 627.93, 942.09 and 445.68 is: 668.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.93 : 942.09 = 445.68 : x
  2. Step 2: Convert to fraction form
    627.93/942.09 = 445.68/x
  3. Step 3: Cross multiply
    627.93x = 942.09 × 445.68
  4. Step 4: Simplify right side
    627.93x = 419,870.67
  5. Step 5: Solve for x
    x = 419,870.67/627.93
  6. Step 6: Final answer
    x = 668.66

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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.