Finding the Fourth Proportional to 415.26, 623.70 and 253.26
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Solution
The fourth proportional to 415.26, 623.70 and 253.26 is: 380.38
Step by Step Solution
- Step 1: Write the proportion equation
415.26 : 623.70 = 253.26 : x - Step 2: Convert to fraction form
415.26/623.70 = 253.26/x - Step 3: Cross multiply
415.26x = 623.70 × 253.26 - Step 4: Simplify right side
415.26x = 157,958.26 - Step 5: Solve for x
x = 157,958.26/415.26 - Step 6: Final answer
x = 380.38
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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.