Finding the Fourth Proportional to 260.19, 390.78 and 248.67
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Solution
The fourth proportional to 260.19, 390.78 and 248.67 is: 373.48
Step by Step Solution
- Step 1: Write the proportion equation
260.19 : 390.78 = 248.67 : x - Step 2: Convert to fraction form
260.19/390.78 = 248.67/x - Step 3: Cross multiply
260.19x = 390.78 × 248.67 - Step 4: Simplify right side
260.19x = 97,175.26 - Step 5: Solve for x
x = 97,175.26/260.19 - Step 6: Final answer
x = 373.48
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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.