Finding the Fourth Proportional to 129.99, 195.02 and 127.70
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Solution
The fourth proportional to 129.99, 195.02 and 127.70 is: 191.58
Step by Step Solution
- Step 1: Write the proportion equation
129.99 : 195.02 = 127.70 : x - Step 2: Convert to fraction form
129.99/195.02 = 127.70/x - Step 3: Cross multiply
129.99x = 195.02 × 127.70 - Step 4: Simplify right side
129.99x = 24,904.05 - Step 5: Solve for x
x = 24,904.05/129.99 - Step 6: Final answer
x = 191.58
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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.