Finding the Fourth Proportional to 274.18, 378.19 and 175.78
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Solution
The fourth proportional to 274.18, 378.19 and 175.78 is: 242.46
Step by Step Solution
- Step 1: Write the proportion equation
274.18 : 378.19 = 175.78 : x - Step 2: Convert to fraction form
274.18/378.19 = 175.78/x - Step 3: Cross multiply
274.18x = 378.19 × 175.78 - Step 4: Simplify right side
274.18x = 66,478.24 - Step 5: Solve for x
x = 66,478.24/274.18 - Step 6: Final answer
x = 242.46
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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.