Finding the Fourth Proportional to 389.19, 537.08 and 214.53
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Solution
The fourth proportional to 389.19, 537.08 and 214.53 is: 296.05
Step by Step Solution
- Step 1: Write the proportion equation
389.19 : 537.08 = 214.53 : x - Step 2: Convert to fraction form
389.19/537.08 = 214.53/x - Step 3: Cross multiply
389.19x = 537.08 × 214.53 - Step 4: Simplify right side
389.19x = 115,218.70 - Step 5: Solve for x
x = 115,218.70/389.19 - Step 6: Final answer
x = 296.05
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.