Home / 1,669.44-2,504.16-515.20

Finding the Fourth Proportional to 1,669.44, 2,504.16 and 515.20

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Solution

The fourth proportional to 1,669.44, 2,504.16 and 515.20 is: 772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.44 : 2,504.16 = 515.20 : x
  2. Step 2: Convert to fraction form
    1,669.44/2,504.16 = 515.20/x
  3. Step 3: Cross multiply
    1,669.44x = 2,504.16 × 515.20
  4. Step 4: Simplify right side
    1,669.44x = 1,290,143.23
  5. Step 5: Solve for x
    x = 1,290,143.23/1,669.44
  6. Step 6: Final answer
    x = 772.80

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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.