Finding the Fourth Proportional to 154.44, 212.99 and 133.70
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Solution
The fourth proportional to 154.44, 212.99 and 133.70 is: 184.38
Step by Step Solution
- Step 1: Write the proportion equation
154.44 : 212.99 = 133.70 : x - Step 2: Convert to fraction form
154.44/212.99 = 133.70/x - Step 3: Cross multiply
154.44x = 212.99 × 133.70 - Step 4: Simplify right side
154.44x = 28,475.03 - Step 5: Solve for x
x = 28,475.03/154.44 - Step 6: Final answer
x = 184.38
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.