Finding the Fourth Proportional to 415.21, 622.26 and 209.93
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Solution
The fourth proportional to 415.21, 622.26 and 209.93 is: 314.60
Step by Step Solution
- Step 1: Write the proportion equation
415.21 : 622.26 = 209.93 : x - Step 2: Convert to fraction form
415.21/622.26 = 209.93/x - Step 3: Cross multiply
415.21x = 622.26 × 209.93 - Step 4: Simplify right side
415.21x = 130,626.88 - Step 5: Solve for x
x = 130,626.88/415.21 - Step 6: Final answer
x = 314.60
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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.