Finding the Fourth Proportional to 133.42, 199.99 and 121.74
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Solution
The fourth proportional to 133.42, 199.99 and 121.74 is: 182.48
Step by Step Solution
- Step 1: Write the proportion equation
133.42 : 199.99 = 121.74 : x - Step 2: Convert to fraction form
133.42/199.99 = 121.74/x - Step 3: Cross multiply
133.42x = 199.99 × 121.74 - Step 4: Simplify right side
133.42x = 24,346.78 - Step 5: Solve for x
x = 24,346.78/133.42 - Step 6: Final answer
x = 182.48
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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.