Finding the Fourth Proportional to 131.99, 197.68 and 115.79
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Solution
The fourth proportional to 131.99, 197.68 and 115.79 is: 173.41
Step by Step Solution
- Step 1: Write the proportion equation
131.99 : 197.68 = 115.79 : x - Step 2: Convert to fraction form
131.99/197.68 = 115.79/x - Step 3: Cross multiply
131.99x = 197.68 × 115.79 - Step 4: Simplify right side
131.99x = 22,888.79 - Step 5: Solve for x
x = 22,888.79/131.99 - Step 6: Final answer
x = 173.41
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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.