Finding the Fourth Proportional to 252.41, 378.62 and 79.07
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Solution
The fourth proportional to 252.41, 378.62 and 79.07 is: 118.61
Step by Step Solution
- Step 1: Write the proportion equation
252.41 : 378.62 = 79.07 : x - Step 2: Convert to fraction form
252.41/378.62 = 79.07/x - Step 3: Cross multiply
252.41x = 378.62 × 79.07 - Step 4: Simplify right side
252.41x = 29,937.30 - Step 5: Solve for x
x = 29,937.30/252.41 - Step 6: Final answer
x = 118.61
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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.