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Finding the Fourth Proportional to 272.49, 373.22 and 257.55

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Solution

The fourth proportional to 272.49, 373.22 and 257.55 is: 352.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.49 : 373.22 = 257.55 : x
  2. Step 2: Convert to fraction form
    272.49/373.22 = 257.55/x
  3. Step 3: Cross multiply
    272.49x = 373.22 × 257.55
  4. Step 4: Simplify right side
    272.49x = 96,123.45
  5. Step 5: Solve for x
    x = 96,123.45/272.49
  6. Step 6: Final answer
    x = 352.76

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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.