Finding the Fourth Proportional to 311.76, 430.23 and 178.99
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Solution
The fourth proportional to 311.76, 430.23 and 178.99 is: 247.00
Step by Step Solution
- Step 1: Write the proportion equation
311.76 : 430.23 = 178.99 : x - Step 2: Convert to fraction form
311.76/430.23 = 178.99/x - Step 3: Cross multiply
311.76x = 430.23 × 178.99 - Step 4: Simplify right side
311.76x = 77,006.13 - Step 5: Solve for x
x = 77,006.13/311.76 - Step 6: Final answer
x = 247.00
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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.