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Finding the Fourth Proportional to 459.79, 634.62 and 327.21

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Solution

The fourth proportional to 459.79, 634.62 and 327.21 is: 451.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.79 : 634.62 = 327.21 : x
  2. Step 2: Convert to fraction form
    459.79/634.62 = 327.21/x
  3. Step 3: Cross multiply
    459.79x = 634.62 × 327.21
  4. Step 4: Simplify right side
    459.79x = 207,651.02
  5. Step 5: Solve for x
    x = 207,651.02/459.79
  6. Step 6: Final answer
    x = 451.62

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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.