Finding the Fourth Proportional to 260.53, 390.88 and 216.99
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Solution
The fourth proportional to 260.53, 390.88 and 216.99 is: 325.56
Step by Step Solution
- Step 1: Write the proportion equation
260.53 : 390.88 = 216.99 : x - Step 2: Convert to fraction form
260.53/390.88 = 216.99/x - Step 3: Cross multiply
260.53x = 390.88 × 216.99 - Step 4: Simplify right side
260.53x = 84,817.05 - Step 5: Solve for x
x = 84,817.05/260.53 - Step 6: Final answer
x = 325.56
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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.