Finding the Fourth Proportional to 193.11, 289.74 and 84.98
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Solution
The fourth proportional to 193.11, 289.74 and 84.98 is: 127.49
Step by Step Solution
- Step 1: Write the proportion equation
193.11 : 289.74 = 84.98 : x - Step 2: Convert to fraction form
193.11/289.74 = 84.98/x - Step 3: Cross multiply
193.11x = 289.74 × 84.98 - Step 4: Simplify right side
193.11x = 24,620.23 - Step 5: Solve for x
x = 24,620.23/193.11 - Step 6: Final answer
x = 127.49
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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.