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Finding the Fourth Proportional to 410.43, 565.97 and 321.75

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Solution

The fourth proportional to 410.43, 565.97 and 321.75 is: 443.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.43 : 565.97 = 321.75 : x
  2. Step 2: Convert to fraction form
    410.43/565.97 = 321.75/x
  3. Step 3: Cross multiply
    410.43x = 565.97 × 321.75
  4. Step 4: Simplify right side
    410.43x = 182,101.05
  5. Step 5: Solve for x
    x = 182,101.05/410.43
  6. Step 6: Final answer
    x = 443.69

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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.