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Finding the Fourth Proportional to 1,645.44, 2,465.44 and 822.88

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Solution

The fourth proportional to 1,645.44, 2,465.44 and 822.88 is: 1,232.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.44 : 2,465.44 = 822.88 : x
  2. Step 2: Convert to fraction form
    1,645.44/2,465.44 = 822.88/x
  3. Step 3: Cross multiply
    1,645.44x = 2,465.44 × 822.88
  4. Step 4: Simplify right side
    1,645.44x = 2,028,761.27
  5. Step 5: Solve for x
    x = 2,028,761.27/1,645.44
  6. Step 6: Final answer
    x = 1,232.96

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1.5x scale

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.