Finding the Fourth Proportional to 279.68, 418.70 and 177.08
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Solution
The fourth proportional to 279.68, 418.70 and 177.08 is: 265.10
Step by Step Solution
- Step 1: Write the proportion equation
279.68 : 418.70 = 177.08 : x - Step 2: Convert to fraction form
279.68/418.70 = 177.08/x - Step 3: Cross multiply
279.68x = 418.70 × 177.08 - Step 4: Simplify right side
279.68x = 74,141.75 - Step 5: Solve for x
x = 74,141.75/279.68 - Step 6: Final answer
x = 265.10
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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.