Home / 1,245.05-1,867.56-379.37

Finding the Fourth Proportional to 1,245.05, 1,867.56 and 379.37

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Solution

The fourth proportional to 1,245.05, 1,867.56 and 379.37 is: 569.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.05 : 1,867.56 = 379.37 : x
  2. Step 2: Convert to fraction form
    1,245.05/1,867.56 = 379.37/x
  3. Step 3: Cross multiply
    1,245.05x = 1,867.56 × 379.37
  4. Step 4: Simplify right side
    1,245.05x = 708,486.90
  5. Step 5: Solve for x
    x = 708,486.90/1,245.05
  6. Step 6: Final answer
    x = 569.04

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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.