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Finding the Fourth Proportional to 441.85, 610.92 and 387.18

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Solution

The fourth proportional to 441.85, 610.92 and 387.18 is: 535.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.85 : 610.92 = 387.18 : x
  2. Step 2: Convert to fraction form
    441.85/610.92 = 387.18/x
  3. Step 3: Cross multiply
    441.85x = 610.92 × 387.18
  4. Step 4: Simplify right side
    441.85x = 236,536.01
  5. Step 5: Solve for x
    x = 236,536.01/441.85
  6. Step 6: Final answer
    x = 535.33

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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.