Finding the Fourth Proportional to 415.80, 623.01 and 252.99
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Solution
The fourth proportional to 415.80, 623.01 and 252.99 is: 379.07
Step by Step Solution
- Step 1: Write the proportion equation
415.80 : 623.01 = 252.99 : x - Step 2: Convert to fraction form
415.80/623.01 = 252.99/x - Step 3: Cross multiply
415.80x = 623.01 × 252.99 - Step 4: Simplify right side
415.80x = 157,615.30 - Step 5: Solve for x
x = 157,615.30/415.80 - Step 6: Final answer
x = 379.07
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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.