Home / 1,231.30-1,847.13-440.60

Finding the Fourth Proportional to 1,231.30, 1,847.13 and 440.60

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Solution

The fourth proportional to 1,231.30, 1,847.13 and 440.60 is: 660.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.30 : 1,847.13 = 440.60 : x
  2. Step 2: Convert to fraction form
    1,231.30/1,847.13 = 440.60/x
  3. Step 3: Cross multiply
    1,231.30x = 1,847.13 × 440.60
  4. Step 4: Simplify right side
    1,231.30x = 813,845.48
  5. Step 5: Solve for x
    x = 813,845.48/1,231.30
  6. Step 6: Final answer
    x = 660.96

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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.