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Finding the Fourth Proportional to 441.98, 608.37 and 389.66

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Solution

The fourth proportional to 441.98, 608.37 and 389.66 is: 536.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.98 : 608.37 = 389.66 : x
  2. Step 2: Convert to fraction form
    441.98/608.37 = 389.66/x
  3. Step 3: Cross multiply
    441.98x = 608.37 × 389.66
  4. Step 4: Simplify right side
    441.98x = 237,054.20
  5. Step 5: Solve for x
    x = 237,054.20/441.98
  6. Step 6: Final answer
    x = 536.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.