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Finding the Fourth Proportional to 443.55, 608.79 and 406.62

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Solution

The fourth proportional to 443.55, 608.79 and 406.62 is: 558.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.55 : 608.79 = 406.62 : x
  2. Step 2: Convert to fraction form
    443.55/608.79 = 406.62/x
  3. Step 3: Cross multiply
    443.55x = 608.79 × 406.62
  4. Step 4: Simplify right side
    443.55x = 247,546.19
  5. Step 5: Solve for x
    x = 247,546.19/443.55
  6. Step 6: Final answer
    x = 558.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.