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Finding the Fourth Proportional to 2,375.76, 3,563.37 and 644.25

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Solution

The fourth proportional to 2,375.76, 3,563.37 and 644.25 is: 966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,375.76 : 3,563.37 = 644.25 : x
  2. Step 2: Convert to fraction form
    2,375.76/3,563.37 = 644.25/x
  3. Step 3: Cross multiply
    2,375.76x = 3,563.37 × 644.25
  4. Step 4: Simplify right side
    2,375.76x = 2,295,701.12
  5. Step 5: Solve for x
    x = 2,295,701.12/2,375.76
  6. Step 6: Final answer
    x = 966.30

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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.