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Finding the Fourth Proportional to 440.55, 607.46 and 329.85

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Solution

The fourth proportional to 440.55, 607.46 and 329.85 is: 454.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.55 : 607.46 = 329.85 : x
  2. Step 2: Convert to fraction form
    440.55/607.46 = 329.85/x
  3. Step 3: Cross multiply
    440.55x = 607.46 × 329.85
  4. Step 4: Simplify right side
    440.55x = 200,370.68
  5. Step 5: Solve for x
    x = 200,370.68/440.55
  6. Step 6: Final answer
    x = 454.82

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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.