Finding the Fourth Proportional to 178.99, 268.08 and 87.76
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Solution
The fourth proportional to 178.99, 268.08 and 87.76 is: 131.44
Step by Step Solution
- Step 1: Write the proportion equation
178.99 : 268.08 = 87.76 : x - Step 2: Convert to fraction form
178.99/268.08 = 87.76/x - Step 3: Cross multiply
178.99x = 268.08 × 87.76 - Step 4: Simplify right side
178.99x = 23,526.70 - Step 5: Solve for x
x = 23,526.70/178.99 - Step 6: Final answer
x = 131.44
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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.