Finding the Fourth Proportional to 153.56, 230.38 and 57.38
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Solution
The fourth proportional to 153.56, 230.38 and 57.38 is: 86.08
Step by Step Solution
- Step 1: Write the proportion equation
153.56 : 230.38 = 57.38 : x - Step 2: Convert to fraction form
153.56/230.38 = 57.38/x - Step 3: Cross multiply
153.56x = 230.38 × 57.38 - Step 4: Simplify right side
153.56x = 13,217.91 - Step 5: Solve for x
x = 13,217.91/153.56 - Step 6: Final answer
x = 86.08
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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.