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Finding the Fourth Proportional to 371.57, 512.77 and 203.53

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Solution

The fourth proportional to 371.57, 512.77 and 203.53 is: 280.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.57 : 512.77 = 203.53 : x
  2. Step 2: Convert to fraction form
    371.57/512.77 = 203.53/x
  3. Step 3: Cross multiply
    371.57x = 512.77 × 203.53
  4. Step 4: Simplify right side
    371.57x = 104,362.15
  5. Step 5: Solve for x
    x = 104,362.15/371.57
  6. Step 6: Final answer
    x = 280.86

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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.