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Finding the Fourth Proportional to 272.55, 375.50 and 223.75

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Solution

The fourth proportional to 272.55, 375.50 and 223.75 is: 308.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.55 : 375.50 = 223.75 : x
  2. Step 2: Convert to fraction form
    272.55/375.50 = 223.75/x
  3. Step 3: Cross multiply
    272.55x = 375.50 × 223.75
  4. Step 4: Simplify right side
    272.55x = 84,018.13
  5. Step 5: Solve for x
    x = 84,018.13/272.55
  6. Step 6: Final answer
    x = 308.27

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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.