Home / 1,245.44-1,867.95-379.55

Finding the Fourth Proportional to 1,245.44, 1,867.95 and 379.55

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Solution

The fourth proportional to 1,245.44, 1,867.95 and 379.55 is: 569.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.44 : 1,867.95 = 379.55 : x
  2. Step 2: Convert to fraction form
    1,245.44/1,867.95 = 379.55/x
  3. Step 3: Cross multiply
    1,245.44x = 1,867.95 × 379.55
  4. Step 4: Simplify right side
    1,245.44x = 708,985.09
  5. Step 5: Solve for x
    x = 708,985.09/1,245.44
  6. Step 6: Final answer
    x = 569.26

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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.