Home / 1,540.95-2,311.38-445.34

Finding the Fourth Proportional to 1,540.95, 2,311.38 and 445.34

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Solution

The fourth proportional to 1,540.95, 2,311.38 and 445.34 is: 667.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.95 : 2,311.38 = 445.34 : x
  2. Step 2: Convert to fraction form
    1,540.95/2,311.38 = 445.34/x
  3. Step 3: Cross multiply
    1,540.95x = 2,311.38 × 445.34
  4. Step 4: Simplify right side
    1,540.95x = 1,029,338.41
  5. Step 5: Solve for x
    x = 1,029,338.41/1,540.95
  6. Step 6: Final answer
    x = 667.99

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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.