Finding the Fourth Proportional to 77.90, 116.96 and 59.99
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Solution
The fourth proportional to 77.90, 116.96 and 59.99 is: 90.06
Step by Step Solution
- Step 1: Write the proportion equation
77.90 : 116.96 = 59.99 : x - Step 2: Convert to fraction form
77.90/116.96 = 59.99/x - Step 3: Cross multiply
77.90x = 116.96 × 59.99 - Step 4: Simplify right side
77.90x = 7,015.55 - Step 5: Solve for x
x = 7,015.55/77.90 - Step 6: Final answer
x = 90.06
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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.