Finding the Fourth Proportional to 133.81, 184.62 and 84.74
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Solution
The fourth proportional to 133.81, 184.62 and 84.74 is: 116.92
Step by Step Solution
- Step 1: Write the proportion equation
133.81 : 184.62 = 84.74 : x - Step 2: Convert to fraction form
133.81/184.62 = 84.74/x - Step 3: Cross multiply
133.81x = 184.62 × 84.74 - Step 4: Simplify right side
133.81x = 15,644.70 - Step 5: Solve for x
x = 15,644.70/133.81 - Step 6: Final answer
x = 116.92
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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.