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Finding the Fourth Proportional to 272.76, 373.88 and 272.28

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Solution

The fourth proportional to 272.76, 373.88 and 272.28 is: 373.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.76 : 373.88 = 272.28 : x
  2. Step 2: Convert to fraction form
    272.76/373.88 = 272.28/x
  3. Step 3: Cross multiply
    272.76x = 373.88 × 272.28
  4. Step 4: Simplify right side
    272.76x = 101,800.05
  5. Step 5: Solve for x
    x = 101,800.05/272.76
  6. Step 6: Final answer
    x = 373.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.