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Finding the Fourth Proportional to 403.90, 604.45 and 241.70

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Solution

The fourth proportional to 403.90, 604.45 and 241.70 is: 361.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.90 : 604.45 = 241.70 : x
  2. Step 2: Convert to fraction form
    403.90/604.45 = 241.70/x
  3. Step 3: Cross multiply
    403.90x = 604.45 × 241.70
  4. Step 4: Simplify right side
    403.90x = 146,095.57
  5. Step 5: Solve for x
    x = 146,095.57/403.90
  6. Step 6: Final answer
    x = 361.71

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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.