Finding the Fourth Proportional to 177.68, 266.68 and 91.07
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Solution
The fourth proportional to 177.68, 266.68 and 91.07 is: 136.69
Step by Step Solution
- Step 1: Write the proportion equation
177.68 : 266.68 = 91.07 : x - Step 2: Convert to fraction form
177.68/266.68 = 91.07/x - Step 3: Cross multiply
177.68x = 266.68 × 91.07 - Step 4: Simplify right side
177.68x = 24,286.55 - Step 5: Solve for x
x = 24,286.55/177.68 - Step 6: Final answer
x = 136.69
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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.