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Finding the Fourth Proportional to 371.01, 511.56 and 331.80

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Solution

The fourth proportional to 371.01, 511.56 and 331.80 is: 457.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.01 : 511.56 = 331.80 : x
  2. Step 2: Convert to fraction form
    371.01/511.56 = 331.80/x
  3. Step 3: Cross multiply
    371.01x = 511.56 × 331.80
  4. Step 4: Simplify right side
    371.01x = 169,735.61
  5. Step 5: Solve for x
    x = 169,735.61/371.01
  6. Step 6: Final answer
    x = 457.50

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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.