Finding the Fourth Proportional to 423.99, 636.11 and 218.70
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Solution
The fourth proportional to 423.99, 636.11 and 218.70 is: 328.11
Step by Step Solution
- Step 1: Write the proportion equation
423.99 : 636.11 = 218.70 : x - Step 2: Convert to fraction form
423.99/636.11 = 218.70/x - Step 3: Cross multiply
423.99x = 636.11 × 218.70 - Step 4: Simplify right side
423.99x = 139,117.26 - Step 5: Solve for x
x = 139,117.26/423.99 - Step 6: Final answer
x = 328.11
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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.