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Finding the Fourth Proportional to 403.20, 604.62 and 247.05

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Solution

The fourth proportional to 403.20, 604.62 and 247.05 is: 370.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.20 : 604.62 = 247.05 : x
  2. Step 2: Convert to fraction form
    403.20/604.62 = 247.05/x
  3. Step 3: Cross multiply
    403.20x = 604.62 × 247.05
  4. Step 4: Simplify right side
    403.20x = 149,371.37
  5. Step 5: Solve for x
    x = 149,371.37/403.20
  6. Step 6: Final answer
    x = 370.46

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