Finding the Fourth Proportional to 131.59, 197.49 and 70.69
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Solution
The fourth proportional to 131.59, 197.49 and 70.69 is: 106.09
Step by Step Solution
- Step 1: Write the proportion equation
131.59 : 197.49 = 70.69 : x - Step 2: Convert to fraction form
131.59/197.49 = 70.69/x - Step 3: Cross multiply
131.59x = 197.49 × 70.69 - Step 4: Simplify right side
131.59x = 13,960.57 - Step 5: Solve for x
x = 13,960.57/131.59 - Step 6: Final answer
x = 106.09
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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.