Finding the Fourth Proportional to 357.75, 536.87 and 129.75
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Solution
The fourth proportional to 357.75, 536.87 and 129.75 is: 194.71
Step by Step Solution
- Step 1: Write the proportion equation
357.75 : 536.87 = 129.75 : x - Step 2: Convert to fraction form
357.75/536.87 = 129.75/x - Step 3: Cross multiply
357.75x = 536.87 × 129.75 - Step 4: Simplify right side
357.75x = 69,658.23 - Step 5: Solve for x
x = 69,658.23/357.75 - Step 6: Final answer
x = 194.71
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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.