Finding the Fourth Proportional to 239.99, 359.95 and 77.65
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Solution
The fourth proportional to 239.99, 359.95 and 77.65 is: 116.46
Step by Step Solution
- Step 1: Write the proportion equation
239.99 : 359.95 = 77.65 : x - Step 2: Convert to fraction form
239.99/359.95 = 77.65/x - Step 3: Cross multiply
239.99x = 359.95 × 77.65 - Step 4: Simplify right side
239.99x = 27,950.12 - Step 5: Solve for x
x = 27,950.12/239.99 - Step 6: Final answer
x = 116.46
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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.