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Finding the Fourth Proportional to 1,480.62, 2,221.15 and 556.05

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Solution

The fourth proportional to 1,480.62, 2,221.15 and 556.05 is: 834.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.62 : 2,221.15 = 556.05 : x
  2. Step 2: Convert to fraction form
    1,480.62/2,221.15 = 556.05/x
  3. Step 3: Cross multiply
    1,480.62x = 2,221.15 × 556.05
  4. Step 4: Simplify right side
    1,480.62x = 1,235,059.35
  5. Step 5: Solve for x
    x = 1,235,059.35/1,480.62
  6. Step 6: Final answer
    x = 834.15

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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.