Finding the Fourth Proportional to 135.91, 203.84 and 84.58
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Solution
The fourth proportional to 135.91, 203.84 and 84.58 is: 126.85
Step by Step Solution
- Step 1: Write the proportion equation
135.91 : 203.84 = 84.58 : x - Step 2: Convert to fraction form
135.91/203.84 = 84.58/x - Step 3: Cross multiply
135.91x = 203.84 × 84.58 - Step 4: Simplify right side
135.91x = 17,239.77 - Step 5: Solve for x
x = 17,239.77/135.91 - Step 6: Final answer
x = 126.85
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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.