Finding the Fourth Proportional to 466.36, 643.08 and 378.88
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Solution
The fourth proportional to 466.36, 643.08 and 378.88 is: 522.45
Step by Step Solution
- Step 1: Write the proportion equation
466.36 : 643.08 = 378.88 : x - Step 2: Convert to fraction form
466.36/643.08 = 378.88/x - Step 3: Cross multiply
466.36x = 643.08 × 378.88 - Step 4: Simplify right side
466.36x = 243,650.15 - Step 5: Solve for x
x = 243,650.15/466.36 - Step 6: Final answer
x = 522.45
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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.