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Finding the Fourth Proportional to 675.11, 932.19 and 439.18

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Solution

The fourth proportional to 675.11, 932.19 and 439.18 is: 606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.11 : 932.19 = 439.18 : x
  2. Step 2: Convert to fraction form
    675.11/932.19 = 439.18/x
  3. Step 3: Cross multiply
    675.11x = 932.19 × 439.18
  4. Step 4: Simplify right side
    675.11x = 409,399.20
  5. Step 5: Solve for x
    x = 409,399.20/675.11
  6. Step 6: Final answer
    x = 606.42

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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.