Finding the Fourth Proportional to 131.91, 196.98 and 114.84
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Solution
The fourth proportional to 131.91, 196.98 and 114.84 is: 171.49
Step by Step Solution
- Step 1: Write the proportion equation
131.91 : 196.98 = 114.84 : x - Step 2: Convert to fraction form
131.91/196.98 = 114.84/x - Step 3: Cross multiply
131.91x = 196.98 × 114.84 - Step 4: Simplify right side
131.91x = 22,621.18 - Step 5: Solve for x
x = 22,621.18/131.91 - Step 6: Final answer
x = 171.49
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.