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Finding the Fourth Proportional to 480.87, 663.60 and 271.05

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Solution

The fourth proportional to 480.87, 663.60 and 271.05 is: 374.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.87 : 663.60 = 271.05 : x
  2. Step 2: Convert to fraction form
    480.87/663.60 = 271.05/x
  3. Step 3: Cross multiply
    480.87x = 663.60 × 271.05
  4. Step 4: Simplify right side
    480.87x = 179,868.78
  5. Step 5: Solve for x
    x = 179,868.78/480.87
  6. Step 6: Final answer
    x = 374.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.