Finding the Fourth Proportional to 818.19, 1,129.08 and 464.09
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Solution
The fourth proportional to 818.19, 1,129.08 and 464.09 is: 640.42
Step by Step Solution
- Step 1: Write the proportion equation
818.19 : 1,129.08 = 464.09 : x - Step 2: Convert to fraction form
818.19/1,129.08 = 464.09/x - Step 3: Cross multiply
818.19x = 1,129.08 × 464.09 - Step 4: Simplify right side
818.19x = 523,989.09 - Step 5: Solve for x
x = 523,989.09/818.19 - Step 6: Final answer
x = 640.42
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.