Finding the Fourth Proportional to 133.81, 201.33 and 79.74
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Solution
The fourth proportional to 133.81, 201.33 and 79.74 is: 119.98
Step by Step Solution
- Step 1: Write the proportion equation
133.81 : 201.33 = 79.74 : x - Step 2: Convert to fraction form
133.81/201.33 = 79.74/x - Step 3: Cross multiply
133.81x = 201.33 × 79.74 - Step 4: Simplify right side
133.81x = 16,054.05 - Step 5: Solve for x
x = 16,054.05/133.81 - Step 6: Final answer
x = 119.98
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.