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Finding the Fourth Proportional to 368.11, 552.16 and 124.81

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Solution

The fourth proportional to 368.11, 552.16 and 124.81 is: 187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.11 : 552.16 = 124.81 : x
  2. Step 2: Convert to fraction form
    368.11/552.16 = 124.81/x
  3. Step 3: Cross multiply
    368.11x = 552.16 × 124.81
  4. Step 4: Simplify right side
    368.11x = 68,912.33
  5. Step 5: Solve for x
    x = 68,912.33/368.11
  6. Step 6: Final answer
    x = 187.21

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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.