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Finding the Fourth Proportional to 371.56, 512.74 and 203.51

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Solution

The fourth proportional to 371.56, 512.74 and 203.51 is: 280.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.56 : 512.74 = 203.51 : x
  2. Step 2: Convert to fraction form
    371.56/512.74 = 203.51/x
  3. Step 3: Cross multiply
    371.56x = 512.74 × 203.51
  4. Step 4: Simplify right side
    371.56x = 104,347.72
  5. Step 5: Solve for x
    x = 104,347.72/371.56
  6. Step 6: Final answer
    x = 280.84

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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.