Finding the Fourth Proportional to 77.13, 106.29 and 58.68
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Solution
The fourth proportional to 77.13, 106.29 and 58.68 is: 80.86
Step by Step Solution
- Step 1: Write the proportion equation
77.13 : 106.29 = 58.68 : x - Step 2: Convert to fraction form
77.13/106.29 = 58.68/x - Step 3: Cross multiply
77.13x = 106.29 × 58.68 - Step 4: Simplify right side
77.13x = 6,237.10 - Step 5: Solve for x
x = 6,237.10/77.13 - Step 6: Final answer
x = 80.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.