Finding the Fourth Proportional to 272.78, 408.99 and 135.94
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Solution
The fourth proportional to 272.78, 408.99 and 135.94 is: 203.82
Step by Step Solution
- Step 1: Write the proportion equation
272.78 : 408.99 = 135.94 : x - Step 2: Convert to fraction form
272.78/408.99 = 135.94/x - Step 3: Cross multiply
272.78x = 408.99 × 135.94 - Step 4: Simplify right side
272.78x = 55,598.10 - Step 5: Solve for x
x = 55,598.10/272.78 - Step 6: Final answer
x = 203.82
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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.