Finding the Fourth Proportional to 381.74, 572.36 and 186.68
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Solution
The fourth proportional to 381.74, 572.36 and 186.68 is: 279.90
Step by Step Solution
- Step 1: Write the proportion equation
381.74 : 572.36 = 186.68 : x - Step 2: Convert to fraction form
381.74/572.36 = 186.68/x - Step 3: Cross multiply
381.74x = 572.36 × 186.68 - Step 4: Simplify right side
381.74x = 106,848.66 - Step 5: Solve for x
x = 106,848.66/381.74 - Step 6: Final answer
x = 279.90
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.