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Finding the Fourth Proportional to 453.97, 681 and 161.45

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Solution

The fourth proportional to 453.97, 681 and 161.45 is: 242.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.97 : 681 = 161.45 : x
  2. Step 2: Convert to fraction form
    453.97/681 = 161.45/x
  3. Step 3: Cross multiply
    453.97x = 681 × 161.45
  4. Step 4: Simplify right side
    453.97x = 109,944.05
  5. Step 5: Solve for x
    x = 109,944.05/453.97
  6. Step 6: Final answer
    x = 242.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.