Finding the Fourth Proportional to 274.07, 378.18 and 157.65
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Solution
The fourth proportional to 274.07, 378.18 and 157.65 is: 217.54
Step by Step Solution
- Step 1: Write the proportion equation
274.07 : 378.18 = 157.65 : x - Step 2: Convert to fraction form
274.07/378.18 = 157.65/x - Step 3: Cross multiply
274.07x = 378.18 × 157.65 - Step 4: Simplify right side
274.07x = 59,620.08 - Step 5: Solve for x
x = 59,620.08/274.07 - Step 6: Final answer
x = 217.54
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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.