Finding the Fourth Proportional to 260.66, 390.99 and 153.14
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Solution
The fourth proportional to 260.66, 390.99 and 153.14 is: 229.71
Step by Step Solution
- Step 1: Write the proportion equation
260.66 : 390.99 = 153.14 : x - Step 2: Convert to fraction form
260.66/390.99 = 153.14/x - Step 3: Cross multiply
260.66x = 390.99 × 153.14 - Step 4: Simplify right side
260.66x = 59,874.25 - Step 5: Solve for x
x = 59,874.25/260.66 - Step 6: Final answer
x = 229.71
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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.