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Finding the Fourth Proportional to 371.48, 512.51 and 272.03

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Solution

The fourth proportional to 371.48, 512.51 and 272.03 is: 375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.48 : 512.51 = 272.03 : x
  2. Step 2: Convert to fraction form
    371.48/512.51 = 272.03/x
  3. Step 3: Cross multiply
    371.48x = 512.51 × 272.03
  4. Step 4: Simplify right side
    371.48x = 139,414.17
  5. Step 5: Solve for x
    x = 139,414.17/371.48
  6. Step 6: Final answer
    x = 375.30

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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.