Finding the Fourth Proportional to 135.24, 202.97 and 128.85
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Solution
The fourth proportional to 135.24, 202.97 and 128.85 is: 193.38
Step by Step Solution
- Step 1: Write the proportion equation
135.24 : 202.97 = 128.85 : x - Step 2: Convert to fraction form
135.24/202.97 = 128.85/x - Step 3: Cross multiply
135.24x = 202.97 × 128.85 - Step 4: Simplify right side
135.24x = 26,152.68 - Step 5: Solve for x
x = 26,152.68/135.24 - Step 6: Final answer
x = 193.38
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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.