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Finding the Fourth Proportional to 627.99, 866.64 and 379.32

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Solution

The fourth proportional to 627.99, 866.64 and 379.32 is: 523.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.99 : 866.64 = 379.32 : x
  2. Step 2: Convert to fraction form
    627.99/866.64 = 379.32/x
  3. Step 3: Cross multiply
    627.99x = 866.64 × 379.32
  4. Step 4: Simplify right side
    627.99x = 328,733.88
  5. Step 5: Solve for x
    x = 328,733.88/627.99
  6. Step 6: Final answer
    x = 523.47

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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.