Finding the Fourth Proportional to 818.64, 1,227.99 and 331.70
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Solution
The fourth proportional to 818.64, 1,227.99 and 331.70 is: 497.55
Step by Step Solution
- Step 1: Write the proportion equation
818.64 : 1,227.99 = 331.70 : x - Step 2: Convert to fraction form
818.64/1,227.99 = 331.70/x - Step 3: Cross multiply
818.64x = 1,227.99 × 331.70 - Step 4: Simplify right side
818.64x = 407,318.14 - Step 5: Solve for x
x = 407,318.14/818.64 - Step 6: Final answer
x = 497.55
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.