Finding the Fourth Proportional to 415.58, 623.34 and 126.99
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Solution
The fourth proportional to 415.58, 623.34 and 126.99 is: 190.48
Step by Step Solution
- Step 1: Write the proportion equation
415.58 : 623.34 = 126.99 : x - Step 2: Convert to fraction form
415.58/623.34 = 126.99/x - Step 3: Cross multiply
415.58x = 623.34 × 126.99 - Step 4: Simplify right side
415.58x = 79,157.95 - Step 5: Solve for x
x = 79,157.95/415.58 - Step 6: Final answer
x = 190.48
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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.