Finding the Fourth Proportional to 274.93, 378.88 and 197.17
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Solution
The fourth proportional to 274.93, 378.88 and 197.17 is: 271.72
Step by Step Solution
- Step 1: Write the proportion equation
274.93 : 378.88 = 197.17 : x - Step 2: Convert to fraction form
274.93/378.88 = 197.17/x - Step 3: Cross multiply
274.93x = 378.88 × 197.17 - Step 4: Simplify right side
274.93x = 74,703.77 - Step 5: Solve for x
x = 74,703.77/274.93 - Step 6: Final answer
x = 271.72
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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.