Finding the Fourth Proportional to 135.53, 203.02 and 121.87
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Solution
The fourth proportional to 135.53, 203.02 and 121.87 is: 182.56
Step by Step Solution
- Step 1: Write the proportion equation
135.53 : 203.02 = 121.87 : x - Step 2: Convert to fraction form
135.53/203.02 = 121.87/x - Step 3: Cross multiply
135.53x = 203.02 × 121.87 - Step 4: Simplify right side
135.53x = 24,741.24 - Step 5: Solve for x
x = 24,741.24/135.53 - Step 6: Final answer
x = 182.56
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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.