Finding the Fourth Proportional to 489.13, 674.99 and 323.62
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Solution
The fourth proportional to 489.13, 674.99 and 323.62 is: 446.59
Step by Step Solution
- Step 1: Write the proportion equation
489.13 : 674.99 = 323.62 : x - Step 2: Convert to fraction form
489.13/674.99 = 323.62/x - Step 3: Cross multiply
489.13x = 674.99 × 323.62 - Step 4: Simplify right side
489.13x = 218,440.26 - Step 5: Solve for x
x = 218,440.26/489.13 - Step 6: Final answer
x = 446.59
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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.