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Finding the Fourth Proportional to 371.01, 511.94 and 231.15

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Solution

The fourth proportional to 371.01, 511.94 and 231.15 is: 318.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.01 : 511.94 = 231.15 : x
  2. Step 2: Convert to fraction form
    371.01/511.94 = 231.15/x
  3. Step 3: Cross multiply
    371.01x = 511.94 × 231.15
  4. Step 4: Simplify right side
    371.01x = 118,334.93
  5. Step 5: Solve for x
    x = 118,334.93/371.01
  6. Step 6: Final answer
    x = 318.95

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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.