Finding the Fourth Proportional to 368.18, 551.81 and 221.99
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Solution
The fourth proportional to 368.18, 551.81 and 221.99 is: 332.70
Step by Step Solution
- Step 1: Write the proportion equation
368.18 : 551.81 = 221.99 : x - Step 2: Convert to fraction form
368.18/551.81 = 221.99/x - Step 3: Cross multiply
368.18x = 551.81 × 221.99 - Step 4: Simplify right side
368.18x = 122,492.43 - Step 5: Solve for x
x = 122,492.43/368.18 - Step 6: Final answer
x = 332.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.