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Finding the Fourth Proportional to 285.11, 393.22 and 246.23

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Solution

The fourth proportional to 285.11, 393.22 and 246.23 is: 339.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.11 : 393.22 = 246.23 : x
  2. Step 2: Convert to fraction form
    285.11/393.22 = 246.23/x
  3. Step 3: Cross multiply
    285.11x = 393.22 × 246.23
  4. Step 4: Simplify right side
    285.11x = 96,822.56
  5. Step 5: Solve for x
    x = 96,822.56/285.11
  6. Step 6: Final answer
    x = 339.60

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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.