Finding the Fourth Proportional to 457.18, 630.39 and 368.62
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Solution
The fourth proportional to 457.18, 630.39 and 368.62 is: 508.28
Step by Step Solution
- Step 1: Write the proportion equation
457.18 : 630.39 = 368.62 : x - Step 2: Convert to fraction form
457.18/630.39 = 368.62/x - Step 3: Cross multiply
457.18x = 630.39 × 368.62 - Step 4: Simplify right side
457.18x = 232,374.36 - Step 5: Solve for x
x = 232,374.36/457.18 - Step 6: Final answer
x = 508.28
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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.