Finding the Fourth Proportional to 76.23, 113.93 and 56.99
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Solution
The fourth proportional to 76.23, 113.93 and 56.99 is: 85.16
Step by Step Solution
- Step 1: Write the proportion equation
76.23 : 113.93 = 56.99 : x - Step 2: Convert to fraction form
76.23/113.93 = 56.99/x - Step 3: Cross multiply
76.23x = 113.93 × 56.99 - Step 4: Simplify right side
76.23x = 6,492.02 - Step 5: Solve for x
x = 6,492.02/76.23 - Step 6: Final answer
x = 85.16
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.