Home / 1,454.86-2,181.06-480.70

Finding the Fourth Proportional to 1,454.86, 2,181.06 and 480.70

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Solution

The fourth proportional to 1,454.86, 2,181.06 and 480.70 is: 720.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.86 : 2,181.06 = 480.70 : x
  2. Step 2: Convert to fraction form
    1,454.86/2,181.06 = 480.70/x
  3. Step 3: Cross multiply
    1,454.86x = 2,181.06 × 480.70
  4. Step 4: Simplify right side
    1,454.86x = 1,048,435.54
  5. Step 5: Solve for x
    x = 1,048,435.54/1,454.86
  6. Step 6: Final answer
    x = 720.64

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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.