Finding the Fourth Proportional to 320.63, 442.36 and 202.58
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Solution
The fourth proportional to 320.63, 442.36 and 202.58 is: 279.48
Step by Step Solution
- Step 1: Write the proportion equation
320.63 : 442.36 = 202.58 : x - Step 2: Convert to fraction form
320.63/442.36 = 202.58/x - Step 3: Cross multiply
320.63x = 442.36 × 202.58 - Step 4: Simplify right side
320.63x = 89,611.74 - Step 5: Solve for x
x = 89,611.74/320.63 - Step 6: Final answer
x = 279.48
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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.