Home / 1,539.20-2,308.84-443.61

Finding the Fourth Proportional to 1,539.20, 2,308.84 and 443.61

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Solution

The fourth proportional to 1,539.20, 2,308.84 and 443.61 is: 665.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.20 : 2,308.84 = 443.61 : x
  2. Step 2: Convert to fraction form
    1,539.20/2,308.84 = 443.61/x
  3. Step 3: Cross multiply
    1,539.20x = 2,308.84 × 443.61
  4. Step 4: Simplify right side
    1,539.20x = 1,024,223.40
  5. Step 5: Solve for x
    x = 1,024,223.40/1,539.20
  6. Step 6: Final answer
    x = 665.42

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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.