Finding the Fourth Proportional to 117.80, 176.68 and 63.80
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Solution
The fourth proportional to 117.80, 176.68 and 63.80 is: 95.69
Step by Step Solution
- Step 1: Write the proportion equation
117.80 : 176.68 = 63.80 : x - Step 2: Convert to fraction form
117.80/176.68 = 63.80/x - Step 3: Cross multiply
117.80x = 176.68 × 63.80 - Step 4: Simplify right side
117.80x = 11,272.18 - Step 5: Solve for x
x = 11,272.18/117.80 - Step 6: Final answer
x = 95.69
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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.