Finding the Fourth Proportional to 818.96, 1,228.68 and 306
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Solution
The fourth proportional to 818.96, 1,228.68 and 306 is: 459.09
Step by Step Solution
- Step 1: Write the proportion equation
818.96 : 1,228.68 = 306 : x - Step 2: Convert to fraction form
818.96/1,228.68 = 306/x - Step 3: Cross multiply
818.96x = 1,228.68 × 306 - Step 4: Simplify right side
818.96x = 375,976.08 - Step 5: Solve for x
x = 375,976.08/818.96 - Step 6: Final answer
x = 459.09
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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.