Finding the Fourth Proportional to 216.55, 298.84 and 133.70
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Solution
The fourth proportional to 216.55, 298.84 and 133.70 is: 184.51
Step by Step Solution
- Step 1: Write the proportion equation
216.55 : 298.84 = 133.70 : x - Step 2: Convert to fraction form
216.55/298.84 = 133.70/x - Step 3: Cross multiply
216.55x = 298.84 × 133.70 - Step 4: Simplify right side
216.55x = 39,954.24 - Step 5: Solve for x
x = 39,954.24/216.55 - Step 6: Final answer
x = 184.51
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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.