Finding the Fourth Proportional to 415.14, 621.76 and 252.60
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Solution
The fourth proportional to 415.14, 621.76 and 252.60 is: 378.32
Step by Step Solution
- Step 1: Write the proportion equation
415.14 : 621.76 = 252.60 : x - Step 2: Convert to fraction form
415.14/621.76 = 252.60/x - Step 3: Cross multiply
415.14x = 621.76 × 252.60 - Step 4: Simplify right side
415.14x = 157,056.58 - Step 5: Solve for x
x = 157,056.58/415.14 - Step 6: Final answer
x = 378.32
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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.