Finding the Fourth Proportional to 135.13, 202.84 and 80.36
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Solution
The fourth proportional to 135.13, 202.84 and 80.36 is: 120.62
Step by Step Solution
- Step 1: Write the proportion equation
135.13 : 202.84 = 80.36 : x - Step 2: Convert to fraction form
135.13/202.84 = 80.36/x - Step 3: Cross multiply
135.13x = 202.84 × 80.36 - Step 4: Simplify right side
135.13x = 16,299.21 - Step 5: Solve for x
x = 16,299.21/135.13 - Step 6: Final answer
x = 120.62
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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.