Finding the Fourth Proportional to 389.18, 537.08 and 214.53
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Solution
The fourth proportional to 389.18, 537.08 and 214.53 is: 296.06
Step by Step Solution
- Step 1: Write the proportion equation
389.18 : 537.08 = 214.53 : x - Step 2: Convert to fraction form
389.18/537.08 = 214.53/x - Step 3: Cross multiply
389.18x = 537.08 × 214.53 - Step 4: Simplify right side
389.18x = 115,218.70 - Step 5: Solve for x
x = 115,218.70/389.18 - Step 6: Final answer
x = 296.06
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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.