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Finding the Fourth Proportional to 481.80, 662.58 and 403.08

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Solution

The fourth proportional to 481.80, 662.58 and 403.08 is: 554.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.80 : 662.58 = 403.08 : x
  2. Step 2: Convert to fraction form
    481.80/662.58 = 403.08/x
  3. Step 3: Cross multiply
    481.80x = 662.58 × 403.08
  4. Step 4: Simplify right side
    481.80x = 267,072.75
  5. Step 5: Solve for x
    x = 267,072.75/481.80
  6. Step 6: Final answer
    x = 554.32

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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.