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Finding the Fourth Proportional to 445.50, 614.79 and 328.86

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Solution

The fourth proportional to 445.50, 614.79 and 328.86 is: 453.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.50 : 614.79 = 328.86 : x
  2. Step 2: Convert to fraction form
    445.50/614.79 = 328.86/x
  3. Step 3: Cross multiply
    445.50x = 614.79 × 328.86
  4. Step 4: Simplify right side
    445.50x = 202,179.84
  5. Step 5: Solve for x
    x = 202,179.84/445.50
  6. Step 6: Final answer
    x = 453.83

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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.