Finding the Fourth Proportional to 415.68, 622.68 and 381.66
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Solution
The fourth proportional to 415.68, 622.68 and 381.66 is: 571.72
Step by Step Solution
- Step 1: Write the proportion equation
415.68 : 622.68 = 381.66 : x - Step 2: Convert to fraction form
415.68/622.68 = 381.66/x - Step 3: Cross multiply
415.68x = 622.68 × 381.66 - Step 4: Simplify right side
415.68x = 237,652.05 - Step 5: Solve for x
x = 237,652.05/415.68 - Step 6: Final answer
x = 571.72
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.