Finding the Fourth Proportional to 415.08, 622.44 and 209.75
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Solution
The fourth proportional to 415.08, 622.44 and 209.75 is: 314.53
Step by Step Solution
- Step 1: Write the proportion equation
415.08 : 622.44 = 209.75 : x - Step 2: Convert to fraction form
415.08/622.44 = 209.75/x - Step 3: Cross multiply
415.08x = 622.44 × 209.75 - Step 4: Simplify right side
415.08x = 130,553.68 - Step 5: Solve for x
x = 130,553.68/415.08 - Step 6: Final answer
x = 314.53
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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.