Finding the Fourth Proportional to 397.17, 547.99 and 239.76
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Solution
The fourth proportional to 397.17, 547.99 and 239.76 is: 330.81
Step by Step Solution
- Step 1: Write the proportion equation
397.17 : 547.99 = 239.76 : x - Step 2: Convert to fraction form
397.17/547.99 = 239.76/x - Step 3: Cross multiply
397.17x = 547.99 × 239.76 - Step 4: Simplify right side
397.17x = 131,386.08 - Step 5: Solve for x
x = 131,386.08/397.17 - Step 6: Final answer
x = 330.81
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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.