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Finding the Fourth Proportional to 403.32, 605.32 and 400.28

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Solution

The fourth proportional to 403.32, 605.32 and 400.28 is: 600.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.32 : 605.32 = 400.28 : x
  2. Step 2: Convert to fraction form
    403.32/605.32 = 400.28/x
  3. Step 3: Cross multiply
    403.32x = 605.32 × 400.28
  4. Step 4: Simplify right side
    403.32x = 242,297.49
  5. Step 5: Solve for x
    x = 242,297.49/403.32
  6. Step 6: Final answer
    x = 600.76

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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.