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Finding the Fourth Proportional to 400.12, 599.02 and 297.86

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Solution

The fourth proportional to 400.12, 599.02 and 297.86 is: 445.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.12 : 599.02 = 297.86 : x
  2. Step 2: Convert to fraction form
    400.12/599.02 = 297.86/x
  3. Step 3: Cross multiply
    400.12x = 599.02 × 297.86
  4. Step 4: Simplify right side
    400.12x = 178,420.36
  5. Step 5: Solve for x
    x = 178,420.36/400.12
  6. Step 6: Final answer
    x = 445.92

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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.