Finding the Fourth Proportional to 209.14, 313.77 and 93.62
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Solution
The fourth proportional to 209.14, 313.77 and 93.62 is: 140.45
Step by Step Solution
- Step 1: Write the proportion equation
209.14 : 313.77 = 93.62 : x - Step 2: Convert to fraction form
209.14/313.77 = 93.62/x - Step 3: Cross multiply
209.14x = 313.77 × 93.62 - Step 4: Simplify right side
209.14x = 29,373.58 - Step 5: Solve for x
x = 29,373.58/209.14 - Step 6: Final answer
x = 140.45
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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.