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Finding the Fourth Proportional to 371.02, 556.20 and 338.92

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Solution

The fourth proportional to 371.02, 556.20 and 338.92 is: 508.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.02 : 556.20 = 338.92 : x
  2. Step 2: Convert to fraction form
    371.02/556.20 = 338.92/x
  3. Step 3: Cross multiply
    371.02x = 556.20 × 338.92
  4. Step 4: Simplify right side
    371.02x = 188,505.91
  5. Step 5: Solve for x
    x = 188,505.91/371.02
  6. Step 6: Final answer
    x = 508.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.