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Finding the Fourth Proportional to 410.29, 611.44 and 398.44

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Solution

The fourth proportional to 410.29, 611.44 and 398.44 is: 593.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.29 : 611.44 = 398.44 : x
  2. Step 2: Convert to fraction form
    410.29/611.44 = 398.44/x
  3. Step 3: Cross multiply
    410.29x = 611.44 × 398.44
  4. Step 4: Simplify right side
    410.29x = 243,623.08
  5. Step 5: Solve for x
    x = 243,623.08/410.29
  6. Step 6: Final answer
    x = 593.78

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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.