Finding the Fourth Proportional to 480.97, 720.08 and 442.70
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Solution
The fourth proportional to 480.97, 720.08 and 442.70 is: 662.78
Step by Step Solution
- Step 1: Write the proportion equation
480.97 : 720.08 = 442.70 : x - Step 2: Convert to fraction form
480.97/720.08 = 442.70/x - Step 3: Cross multiply
480.97x = 720.08 × 442.70 - Step 4: Simplify right side
480.97x = 318,779.42 - Step 5: Solve for x
x = 318,779.42/480.97 - Step 6: Final answer
x = 662.78
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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.