Home / 1,245.15-1,867.30-504.56

Finding the Fourth Proportional to 1,245.15, 1,867.30 and 504.56

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Solution

The fourth proportional to 1,245.15, 1,867.30 and 504.56 is: 756.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.15 : 1,867.30 = 504.56 : x
  2. Step 2: Convert to fraction form
    1,245.15/1,867.30 = 504.56/x
  3. Step 3: Cross multiply
    1,245.15x = 1,867.30 × 504.56
  4. Step 4: Simplify right side
    1,245.15x = 942,168.29
  5. Step 5: Solve for x
    x = 942,168.29/1,245.15
  6. Step 6: Final answer
    x = 756.67

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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.