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Finding the Fourth Proportional to 368.43, 552.40 and 124.86

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Solution

The fourth proportional to 368.43, 552.40 and 124.86 is: 187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.43 : 552.40 = 124.86 : x
  2. Step 2: Convert to fraction form
    368.43/552.40 = 124.86/x
  3. Step 3: Cross multiply
    368.43x = 552.40 × 124.86
  4. Step 4: Simplify right side
    368.43x = 68,972.66
  5. Step 5: Solve for x
    x = 68,972.66/368.43
  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.