Home / 1,353.36-2,029.60-379.20

Finding the Fourth Proportional to 1,353.36, 2,029.60 and 379.20

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Solution

The fourth proportional to 1,353.36, 2,029.60 and 379.20 is: 568.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.36 : 2,029.60 = 379.20 : x
  2. Step 2: Convert to fraction form
    1,353.36/2,029.60 = 379.20/x
  3. Step 3: Cross multiply
    1,353.36x = 2,029.60 × 379.20
  4. Step 4: Simplify right side
    1,353.36x = 769,624.32
  5. Step 5: Solve for x
    x = 769,624.32/1,353.36
  6. Step 6: Final answer
    x = 568.68

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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.