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Finding the Fourth Proportional to 599.38, 899.22 and 447.40

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Solution

The fourth proportional to 599.38, 899.22 and 447.40 is: 671.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    599.38 : 899.22 = 447.40 : x
  2. Step 2: Convert to fraction form
    599.38/899.22 = 447.40/x
  3. Step 3: Cross multiply
    599.38x = 899.22 × 447.40
  4. Step 4: Simplify right side
    599.38x = 402,311.03
  5. Step 5: Solve for x
    x = 402,311.03/599.38
  6. Step 6: Final answer
    x = 671.21

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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.