Finding the Fourth Proportional to 105.59, 158.48 and 80.99
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Solution
The fourth proportional to 105.59, 158.48 and 80.99 is: 121.55
Step by Step Solution
- Step 1: Write the proportion equation
105.59 : 158.48 = 80.99 : x - Step 2: Convert to fraction form
105.59/158.48 = 80.99/x - Step 3: Cross multiply
105.59x = 158.48 × 80.99 - Step 4: Simplify right side
105.59x = 12,834.10 - Step 5: Solve for x
x = 12,834.10/105.59 - Step 6: Final answer
x = 121.55
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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.