Finding the Fourth Proportional to 135.08, 202.30 and 80.84
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Solution
The fourth proportional to 135.08, 202.30 and 80.84 is: 121.07
Step by Step Solution
- Step 1: Write the proportion equation
135.08 : 202.30 = 80.84 : x - Step 2: Convert to fraction form
135.08/202.30 = 80.84/x - Step 3: Cross multiply
135.08x = 202.30 × 80.84 - Step 4: Simplify right side
135.08x = 16,353.93 - Step 5: Solve for x
x = 16,353.93/135.08 - Step 6: Final answer
x = 121.07
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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.