Finding the Fourth Proportional to 135.22, 202.76 and 80.43
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Solution
The fourth proportional to 135.22, 202.76 and 80.43 is: 120.60
Step by Step Solution
- Step 1: Write the proportion equation
135.22 : 202.76 = 80.43 : x - Step 2: Convert to fraction form
135.22/202.76 = 80.43/x - Step 3: Cross multiply
135.22x = 202.76 × 80.43 - Step 4: Simplify right side
135.22x = 16,307.99 - Step 5: Solve for x
x = 16,307.99/135.22 - Step 6: Final answer
x = 120.60
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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.