Finding the Fourth Proportional to 193.26, 289.91 and 129
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Solution
The fourth proportional to 193.26, 289.91 and 129 is: 193.51
Step by Step Solution
- Step 1: Write the proportion equation
193.26 : 289.91 = 129 : x - Step 2: Convert to fraction form
193.26/289.91 = 129/x - Step 3: Cross multiply
193.26x = 289.91 × 129 - Step 4: Simplify right side
193.26x = 37,397.75 - Step 5: Solve for x
x = 37,397.75/193.26 - Step 6: Final answer
x = 193.51
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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.