Finding the Fourth Proportional to 274.47, 378.64 and 181.08
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Solution
The fourth proportional to 274.47, 378.64 and 181.08 is: 249.81
Step by Step Solution
- Step 1: Write the proportion equation
274.47 : 378.64 = 181.08 : x - Step 2: Convert to fraction form
274.47/378.64 = 181.08/x - Step 3: Cross multiply
274.47x = 378.64 × 181.08 - Step 4: Simplify right side
274.47x = 68,564.13 - Step 5: Solve for x
x = 68,564.13/274.47 - Step 6: Final answer
x = 249.81
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.