Finding the Fourth Proportional to 207.42, 311.09 and 79.08
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Solution
The fourth proportional to 207.42, 311.09 and 79.08 is: 118.60
Step by Step Solution
- Step 1: Write the proportion equation
207.42 : 311.09 = 79.08 : x - Step 2: Convert to fraction form
207.42/311.09 = 79.08/x - Step 3: Cross multiply
207.42x = 311.09 × 79.08 - Step 4: Simplify right side
207.42x = 24,601.00 - Step 5: Solve for x
x = 24,601.00/207.42 - Step 6: Final answer
x = 118.60
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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.