Finding the Fourth Proportional to 239.40, 358.98 and 77.08
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Solution
The fourth proportional to 239.40, 358.98 and 77.08 is: 115.58
Step by Step Solution
- Step 1: Write the proportion equation
239.40 : 358.98 = 77.08 : x - Step 2: Convert to fraction form
239.40/358.98 = 77.08/x - Step 3: Cross multiply
239.40x = 358.98 × 77.08 - Step 4: Simplify right side
239.40x = 27,670.18 - Step 5: Solve for x
x = 27,670.18/239.40 - Step 6: Final answer
x = 115.58
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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.