Finding the Fourth Proportional to 418.19, 577.12 and 231.70
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Solution
The fourth proportional to 418.19, 577.12 and 231.70 is: 319.75
Step by Step Solution
- Step 1: Write the proportion equation
418.19 : 577.12 = 231.70 : x - Step 2: Convert to fraction form
418.19/577.12 = 231.70/x - Step 3: Cross multiply
418.19x = 577.12 × 231.70 - Step 4: Simplify right side
418.19x = 133,715.24 - Step 5: Solve for x
x = 133,715.24/418.19 - Step 6: Final answer
x = 319.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.