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Finding the Fourth Proportional to 371.92, 555.32 and 353.92

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Solution

The fourth proportional to 371.92, 555.32 and 353.92 is: 528.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.92 : 555.32 = 353.92 : x
  2. Step 2: Convert to fraction form
    371.92/555.32 = 353.92/x
  3. Step 3: Cross multiply
    371.92x = 555.32 × 353.92
  4. Step 4: Simplify right side
    371.92x = 196,538.85
  5. Step 5: Solve for x
    x = 196,538.85/371.92
  6. Step 6: Final answer
    x = 528.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.