Finding the Fourth Proportional to 368.99, 509.27 and 221.63
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Solution
The fourth proportional to 368.99, 509.27 and 221.63 is: 305.89
Step by Step Solution
- Step 1: Write the proportion equation
368.99 : 509.27 = 221.63 : x - Step 2: Convert to fraction form
368.99/509.27 = 221.63/x - Step 3: Cross multiply
368.99x = 509.27 × 221.63 - Step 4: Simplify right side
368.99x = 112,869.51 - Step 5: Solve for x
x = 112,869.51/368.99 - Step 6: Final answer
x = 305.89
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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.