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Finding the Fourth Proportional to 368.28, 552.48 and 137.16

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Solution

The fourth proportional to 368.28, 552.48 and 137.16 is: 205.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.28 : 552.48 = 137.16 : x
  2. Step 2: Convert to fraction form
    368.28/552.48 = 137.16/x
  3. Step 3: Cross multiply
    368.28x = 552.48 × 137.16
  4. Step 4: Simplify right side
    368.28x = 75,778.16
  5. Step 5: Solve for x
    x = 75,778.16/368.28
  6. Step 6: Final answer
    x = 205.76

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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.