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Finding the Fourth Proportional to 403.95, 604.67 and 264.97

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Solution

The fourth proportional to 403.95, 604.67 and 264.97 is: 396.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.95 : 604.67 = 264.97 : x
  2. Step 2: Convert to fraction form
    403.95/604.67 = 264.97/x
  3. Step 3: Cross multiply
    403.95x = 604.67 × 264.97
  4. Step 4: Simplify right side
    403.95x = 160,216.39
  5. Step 5: Solve for x
    x = 160,216.39/403.95
  6. Step 6: Final answer
    x = 396.62

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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.