Finding the Fourth Proportional to 309.87, 427.62 and 169.99
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Solution
The fourth proportional to 309.87, 427.62 and 169.99 is: 234.58
Step by Step Solution
- Step 1: Write the proportion equation
309.87 : 427.62 = 169.99 : x - Step 2: Convert to fraction form
309.87/427.62 = 169.99/x - Step 3: Cross multiply
309.87x = 427.62 × 169.99 - Step 4: Simplify right side
309.87x = 72,690.69 - Step 5: Solve for x
x = 72,690.69/309.87 - Step 6: Final answer
x = 234.58
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.