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Finding the Fourth Proportional to 409.54, 565.29 and 326.62

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Solution

The fourth proportional to 409.54, 565.29 and 326.62 is: 450.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.54 : 565.29 = 326.62 : x
  2. Step 2: Convert to fraction form
    409.54/565.29 = 326.62/x
  3. Step 3: Cross multiply
    409.54x = 565.29 × 326.62
  4. Step 4: Simplify right side
    409.54x = 184,635.02
  5. Step 5: Solve for x
    x = 184,635.02/409.54
  6. Step 6: Final answer
    x = 450.84

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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.