Finding the Fourth Proportional to 415.18, 622.76 and 387.84
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Solution
The fourth proportional to 415.18, 622.76 and 387.84 is: 581.75
Step by Step Solution
- Step 1: Write the proportion equation
415.18 : 622.76 = 387.84 : x - Step 2: Convert to fraction form
415.18/622.76 = 387.84/x - Step 3: Cross multiply
415.18x = 622.76 × 387.84 - Step 4: Simplify right side
415.18x = 241,531.24 - Step 5: Solve for x
x = 241,531.24/415.18 - Step 6: Final answer
x = 581.75
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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.