Home / 1,485.86-2,228.90-445.84

Finding the Fourth Proportional to 1,485.86, 2,228.90 and 445.84

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Solution

The fourth proportional to 1,485.86, 2,228.90 and 445.84 is: 668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.86 : 2,228.90 = 445.84 : x
  2. Step 2: Convert to fraction form
    1,485.86/2,228.90 = 445.84/x
  3. Step 3: Cross multiply
    1,485.86x = 2,228.90 × 445.84
  4. Step 4: Simplify right side
    1,485.86x = 993,732.78
  5. Step 5: Solve for x
    x = 993,732.78/1,485.86
  6. Step 6: Final answer
    x = 668.79

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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.