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Finding the Fourth Proportional to 403.74, 604.58 and 266.37

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Solution

The fourth proportional to 403.74, 604.58 and 266.37 is: 398.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.74 : 604.58 = 266.37 : x
  2. Step 2: Convert to fraction form
    403.74/604.58 = 266.37/x
  3. Step 3: Cross multiply
    403.74x = 604.58 × 266.37
  4. Step 4: Simplify right side
    403.74x = 161,041.97
  5. Step 5: Solve for x
    x = 161,041.97/403.74
  6. Step 6: Final answer
    x = 398.88

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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.