Finding the Fourth Proportional to 252.54, 378.91 and 203.74
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Solution
The fourth proportional to 252.54, 378.91 and 203.74 is: 305.69
Step by Step Solution
- Step 1: Write the proportion equation
252.54 : 378.91 = 203.74 : x - Step 2: Convert to fraction form
252.54/378.91 = 203.74/x - Step 3: Cross multiply
252.54x = 378.91 × 203.74 - Step 4: Simplify right side
252.54x = 77,199.12 - Step 5: Solve for x
x = 77,199.12/252.54 - Step 6: Final answer
x = 305.69
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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.