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Finding the Fourth Proportional to 272.43, 375.99 and 174.21

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Solution

The fourth proportional to 272.43, 375.99 and 174.21 is: 240.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.43 : 375.99 = 174.21 : x
  2. Step 2: Convert to fraction form
    272.43/375.99 = 174.21/x
  3. Step 3: Cross multiply
    272.43x = 375.99 × 174.21
  4. Step 4: Simplify right side
    272.43x = 65,501.22
  5. Step 5: Solve for x
    x = 65,501.22/272.43
  6. Step 6: Final answer
    x = 240.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.