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Finding the Fourth Proportional to 403.29, 604.74 and 186.75

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Solution

The fourth proportional to 403.29, 604.74 and 186.75 is: 280.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.29 : 604.74 = 186.75 : x
  2. Step 2: Convert to fraction form
    403.29/604.74 = 186.75/x
  3. Step 3: Cross multiply
    403.29x = 604.74 × 186.75
  4. Step 4: Simplify right side
    403.29x = 112,935.20
  5. Step 5: Solve for x
    x = 112,935.20/403.29
  6. Step 6: Final answer
    x = 280.03

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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.