Finding the Fourth Proportional to 133.76, 199.70 and 110.99
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Solution
The fourth proportional to 133.76, 199.70 and 110.99 is: 165.70
Step by Step Solution
- Step 1: Write the proportion equation
133.76 : 199.70 = 110.99 : x - Step 2: Convert to fraction form
133.76/199.70 = 110.99/x - Step 3: Cross multiply
133.76x = 199.70 × 110.99 - Step 4: Simplify right side
133.76x = 22,163.15 - Step 5: Solve for x
x = 22,163.15/133.76 - Step 6: Final answer
x = 165.70
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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.