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Finding the Fourth Proportional to 441.90, 606.29 and 405.18

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Solution

The fourth proportional to 441.90, 606.29 and 405.18 is: 555.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.90 : 606.29 = 405.18 : x
  2. Step 2: Convert to fraction form
    441.90/606.29 = 405.18/x
  3. Step 3: Cross multiply
    441.90x = 606.29 × 405.18
  4. Step 4: Simplify right side
    441.90x = 245,654.56
  5. Step 5: Solve for x
    x = 245,654.56/441.90
  6. Step 6: Final answer
    x = 555.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.