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Finding the Fourth Proportional to 315.31, 472.42 and 246.03

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Solution

The fourth proportional to 315.31, 472.42 and 246.03 is: 368.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.31 : 472.42 = 246.03 : x
  2. Step 2: Convert to fraction form
    315.31/472.42 = 246.03/x
  3. Step 3: Cross multiply
    315.31x = 472.42 × 246.03
  4. Step 4: Simplify right side
    315.31x = 116,229.44
  5. Step 5: Solve for x
    x = 116,229.44/315.31
  6. Step 6: Final answer
    x = 368.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.