Finding the Fourth Proportional to 178.80, 268.19 and 117.99
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Solution
The fourth proportional to 178.80, 268.19 and 117.99 is: 176.98
Step by Step Solution
- Step 1: Write the proportion equation
178.80 : 268.19 = 117.99 : x - Step 2: Convert to fraction form
178.80/268.19 = 117.99/x - Step 3: Cross multiply
178.80x = 268.19 × 117.99 - Step 4: Simplify right side
178.80x = 31,643.74 - Step 5: Solve for x
x = 31,643.74/178.80 - Step 6: Final answer
x = 176.98
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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.