Finding the Fourth Proportional to 141.68, 213.62 and 129.68
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Solution
The fourth proportional to 141.68, 213.62 and 129.68 is: 195.53
Step by Step Solution
- Step 1: Write the proportion equation
141.68 : 213.62 = 129.68 : x - Step 2: Convert to fraction form
141.68/213.62 = 129.68/x - Step 3: Cross multiply
141.68x = 213.62 × 129.68 - Step 4: Simplify right side
141.68x = 27,702.24 - Step 5: Solve for x
x = 27,702.24/141.68 - Step 6: Final answer
x = 195.53
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.