Finding the Fourth Proportional to 131.49, 197.99 and 97.49
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Solution
The fourth proportional to 131.49, 197.99 and 97.49 is: 146.79
Step by Step Solution
- Step 1: Write the proportion equation
131.49 : 197.99 = 97.49 : x - Step 2: Convert to fraction form
131.49/197.99 = 97.49/x - Step 3: Cross multiply
131.49x = 197.99 × 97.49 - Step 4: Simplify right side
131.49x = 19,302.05 - Step 5: Solve for x
x = 19,302.05/131.49 - Step 6: Final answer
x = 146.79
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.