Finding the Fourth Proportional to 480.74, 662.99 and 331.70
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Solution
The fourth proportional to 480.74, 662.99 and 331.70 is: 457.44
Step by Step Solution
- Step 1: Write the proportion equation
480.74 : 662.99 = 331.70 : x - Step 2: Convert to fraction form
480.74/662.99 = 331.70/x - Step 3: Cross multiply
480.74x = 662.99 × 331.70 - Step 4: Simplify right side
480.74x = 219,908.81 - Step 5: Solve for x
x = 219,908.81/480.74 - Step 6: Final answer
x = 457.44
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.