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Finding the Fourth Proportional to 371.06, 512.16 and 231.26

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Solution

The fourth proportional to 371.06, 512.16 and 231.26 is: 319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.06 : 512.16 = 231.26 : x
  2. Step 2: Convert to fraction form
    371.06/512.16 = 231.26/x
  3. Step 3: Cross multiply
    371.06x = 512.16 × 231.26
  4. Step 4: Simplify right side
    371.06x = 118,442.12
  5. Step 5: Solve for x
    x = 118,442.12/371.06
  6. Step 6: Final answer
    x = 319.20

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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.