Finding the Fourth Proportional to 381.23, 526.08 and 231.99
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Solution
The fourth proportional to 381.23, 526.08 and 231.99 is: 320.14
Step by Step Solution
- Step 1: Write the proportion equation
381.23 : 526.08 = 231.99 : x - Step 2: Convert to fraction form
381.23/526.08 = 231.99/x - Step 3: Cross multiply
381.23x = 526.08 × 231.99 - Step 4: Simplify right side
381.23x = 122,045.30 - Step 5: Solve for x
x = 122,045.30/381.23 - Step 6: Final answer
x = 320.14
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.