Finding the Fourth Proportional to 272.91, 408.97 and 135.77
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Solution
The fourth proportional to 272.91, 408.97 and 135.77 is: 203.46
Step by Step Solution
- Step 1: Write the proportion equation
272.91 : 408.97 = 135.77 : x - Step 2: Convert to fraction form
272.91/408.97 = 135.77/x - Step 3: Cross multiply
272.91x = 408.97 × 135.77 - Step 4: Simplify right side
272.91x = 55,525.90 - Step 5: Solve for x
x = 55,525.90/272.91 - Step 6: Final answer
x = 203.46
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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.