Home / 1,454.24-2,181.72-480.80

Finding the Fourth Proportional to 1,454.24, 2,181.72 and 480.80

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Solution

The fourth proportional to 1,454.24, 2,181.72 and 480.80 is: 721.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.24 : 2,181.72 = 480.80 : x
  2. Step 2: Convert to fraction form
    1,454.24/2,181.72 = 480.80/x
  3. Step 3: Cross multiply
    1,454.24x = 2,181.72 × 480.80
  4. Step 4: Simplify right side
    1,454.24x = 1,048,970.98
  5. Step 5: Solve for x
    x = 1,048,970.98/1,454.24
  6. Step 6: Final answer
    x = 721.32

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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.