Finding the Fourth Proportional to 358.62, 537.99 and 142.20
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Solution
The fourth proportional to 358.62, 537.99 and 142.20 is: 213.32
Step by Step Solution
- Step 1: Write the proportion equation
358.62 : 537.99 = 142.20 : x - Step 2: Convert to fraction form
358.62/537.99 = 142.20/x - Step 3: Cross multiply
358.62x = 537.99 × 142.20 - Step 4: Simplify right side
358.62x = 76,502.18 - Step 5: Solve for x
x = 76,502.18/358.62 - Step 6: Final answer
x = 213.32
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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.