Finding the Fourth Proportional to 358.07, 537.18 and 138.70
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Solution
The fourth proportional to 358.07, 537.18 and 138.70 is: 208.07
Step by Step Solution
- Step 1: Write the proportion equation
358.07 : 537.18 = 138.70 : x - Step 2: Convert to fraction form
358.07/537.18 = 138.70/x - Step 3: Cross multiply
358.07x = 537.18 × 138.70 - Step 4: Simplify right side
358.07x = 74,504.18 - Step 5: Solve for x
x = 74,504.18/358.07 - Step 6: Final answer
x = 208.07
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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.