Finding the Fourth Proportional to 133.05, 199.85 and 84.99
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Solution
The fourth proportional to 133.05, 199.85 and 84.99 is: 127.66
Step by Step Solution
- Step 1: Write the proportion equation
133.05 : 199.85 = 84.99 : x - Step 2: Convert to fraction form
133.05/199.85 = 84.99/x - Step 3: Cross multiply
133.05x = 199.85 × 84.99 - Step 4: Simplify right side
133.05x = 16,984.83 - Step 5: Solve for x
x = 16,984.83/133.05 - Step 6: Final answer
x = 127.66
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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.