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Finding the Fourth Proportional to 247.16, 368.15 and 238.43

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Solution

The fourth proportional to 247.16, 368.15 and 238.43 is: 355.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.16 : 368.15 = 238.43 : x
  2. Step 2: Convert to fraction form
    247.16/368.15 = 238.43/x
  3. Step 3: Cross multiply
    247.16x = 368.15 × 238.43
  4. Step 4: Simplify right side
    247.16x = 87,778.00
  5. Step 5: Solve for x
    x = 87,778.00/247.16
  6. Step 6: Final answer
    x = 355.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.