Finding the Fourth Proportional to 368.95, 509.08 and 221.60
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Solution
The fourth proportional to 368.95, 509.08 and 221.60 is: 305.77
Step by Step Solution
- Step 1: Write the proportion equation
368.95 : 509.08 = 221.60 : x - Step 2: Convert to fraction form
368.95/509.08 = 221.60/x - Step 3: Cross multiply
368.95x = 509.08 × 221.60 - Step 4: Simplify right side
368.95x = 112,812.13 - Step 5: Solve for x
x = 112,812.13/368.95 - Step 6: Final answer
x = 305.77
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.