Finding the Fourth Proportional to 77.99, 116.99 and 62.87
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Solution
The fourth proportional to 77.99, 116.99 and 62.87 is: 94.31
Step by Step Solution
- Step 1: Write the proportion equation
77.99 : 116.99 = 62.87 : x - Step 2: Convert to fraction form
77.99/116.99 = 62.87/x - Step 3: Cross multiply
77.99x = 116.99 × 62.87 - Step 4: Simplify right side
77.99x = 7,355.14 - Step 5: Solve for x
x = 7,355.14/77.99 - Step 6: Final answer
x = 94.31
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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.