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Finding the Fourth Proportional to 622.44, 860.26 and 475.08

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Solution

The fourth proportional to 622.44, 860.26 and 475.08 is: 656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.44 : 860.26 = 475.08 : x
  2. Step 2: Convert to fraction form
    622.44/860.26 = 475.08/x
  3. Step 3: Cross multiply
    622.44x = 860.26 × 475.08
  4. Step 4: Simplify right side
    622.44x = 408,692.32
  5. Step 5: Solve for x
    x = 408,692.32/622.44
  6. Step 6: Final answer
    x = 656.60

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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.