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Finding the Fourth Proportional to 627.21, 942.84 and 607.77

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Solution

The fourth proportional to 627.21, 942.84 and 607.77 is: 913.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.21 : 942.84 = 607.77 : x
  2. Step 2: Convert to fraction form
    627.21/942.84 = 607.77/x
  3. Step 3: Cross multiply
    627.21x = 942.84 × 607.77
  4. Step 4: Simplify right side
    627.21x = 573,029.87
  5. Step 5: Solve for x
    x = 573,029.87/627.21
  6. Step 6: Final answer
    x = 913.62

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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.