Home / 1,245.01-1,867.27-379.21

Finding the Fourth Proportional to 1,245.01, 1,867.27 and 379.21

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Solution

The fourth proportional to 1,245.01, 1,867.27 and 379.21 is: 568.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.01 : 1,867.27 = 379.21 : x
  2. Step 2: Convert to fraction form
    1,245.01/1,867.27 = 379.21/x
  3. Step 3: Cross multiply
    1,245.01x = 1,867.27 × 379.21
  4. Step 4: Simplify right side
    1,245.01x = 708,087.46
  5. Step 5: Solve for x
    x = 708,087.46/1,245.01
  6. Step 6: Final answer
    x = 568.74

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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.