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Finding the Fourth Proportional to 406.52, 606.84 and 379.20

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Solution

The fourth proportional to 406.52, 606.84 and 379.20 is: 566.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.52 : 606.84 = 379.20 : x
  2. Step 2: Convert to fraction form
    406.52/606.84 = 379.20/x
  3. Step 3: Cross multiply
    406.52x = 606.84 × 379.20
  4. Step 4: Simplify right side
    406.52x = 230,113.73
  5. Step 5: Solve for x
    x = 230,113.73/406.52
  6. Step 6: Final answer
    x = 566.06

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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.