Finding the Fourth Proportional to 193.26, 289.80 and 84.99
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Solution
The fourth proportional to 193.26, 289.80 and 84.99 is: 127.45
Step by Step Solution
- Step 1: Write the proportion equation
193.26 : 289.80 = 84.99 : x - Step 2: Convert to fraction form
193.26/289.80 = 84.99/x - Step 3: Cross multiply
193.26x = 289.80 × 84.99 - Step 4: Simplify right side
193.26x = 24,630.10 - Step 5: Solve for x
x = 24,630.10/193.26 - Step 6: Final answer
x = 127.45
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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.