Finding the Fourth Proportional to 345.84, 478.08 and 325.44
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Solution
The fourth proportional to 345.84, 478.08 and 325.44 is: 449.88
Step by Step Solution
- Step 1: Write the proportion equation
345.84 : 478.08 = 325.44 : x - Step 2: Convert to fraction form
345.84/478.08 = 325.44/x - Step 3: Cross multiply
345.84x = 478.08 × 325.44 - Step 4: Simplify right side
345.84x = 155,586.36 - Step 5: Solve for x
x = 155,586.36/345.84 - Step 6: Final answer
x = 449.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.