Finding the Fourth Proportional to 260.73, 390.99 and 98.31
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Solution
The fourth proportional to 260.73, 390.99 and 98.31 is: 147.43
Step by Step Solution
- Step 1: Write the proportion equation
260.73 : 390.99 = 98.31 : x - Step 2: Convert to fraction form
260.73/390.99 = 98.31/x - Step 3: Cross multiply
260.73x = 390.99 × 98.31 - Step 4: Simplify right side
260.73x = 38,438.23 - Step 5: Solve for x
x = 38,438.23/260.73 - Step 6: Final answer
x = 147.43
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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.