Home / 1,245.27-1,868.01-379.59

Finding the Fourth Proportional to 1,245.27, 1,868.01 and 379.59

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Solution

The fourth proportional to 1,245.27, 1,868.01 and 379.59 is: 569.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.27 : 1,868.01 = 379.59 : x
  2. Step 2: Convert to fraction form
    1,245.27/1,868.01 = 379.59/x
  3. Step 3: Cross multiply
    1,245.27x = 1,868.01 × 379.59
  4. Step 4: Simplify right side
    1,245.27x = 709,077.92
  5. Step 5: Solve for x
    x = 709,077.92/1,245.27
  6. Step 6: Final answer
    x = 569.42

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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.