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Finding the Fourth Proportional to 371.26, 512.39 and 216.10

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Solution

The fourth proportional to 371.26, 512.39 and 216.10 is: 298.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.26 : 512.39 = 216.10 : x
  2. Step 2: Convert to fraction form
    371.26/512.39 = 216.10/x
  3. Step 3: Cross multiply
    371.26x = 512.39 × 216.10
  4. Step 4: Simplify right side
    371.26x = 110,727.48
  5. Step 5: Solve for x
    x = 110,727.48/371.26
  6. Step 6: Final answer
    x = 298.25

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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.