Finding the Fourth Proportional to 340.64, 511.10 and 145.68
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Solution
The fourth proportional to 340.64, 511.10 and 145.68 is: 218.58
Step by Step Solution
- Step 1: Write the proportion equation
340.64 : 511.10 = 145.68 : x - Step 2: Convert to fraction form
340.64/511.10 = 145.68/x - Step 3: Cross multiply
340.64x = 511.10 × 145.68 - Step 4: Simplify right side
340.64x = 74,457.05 - Step 5: Solve for x
x = 74,457.05/340.64 - Step 6: Final answer
x = 218.58
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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.