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Finding the Fourth Proportional to 444.60, 667.08 and 399.60

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Solution

The fourth proportional to 444.60, 667.08 and 399.60 is: 599.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.60 : 667.08 = 399.60 : x
  2. Step 2: Convert to fraction form
    444.60/667.08 = 399.60/x
  3. Step 3: Cross multiply
    444.60x = 667.08 × 399.60
  4. Step 4: Simplify right side
    444.60x = 266,565.17
  5. Step 5: Solve for x
    x = 266,565.17/444.60
  6. Step 6: Final answer
    x = 599.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.