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Finding the Fourth Proportional to 223.86, 308.90 and 125.62

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Solution

The fourth proportional to 223.86, 308.90 and 125.62 is: 173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.86 : 308.90 = 125.62 : x
  2. Step 2: Convert to fraction form
    223.86/308.90 = 125.62/x
  3. Step 3: Cross multiply
    223.86x = 308.90 × 125.62
  4. Step 4: Simplify right side
    223.86x = 38,804.02
  5. Step 5: Solve for x
    x = 38,804.02/223.86
  6. Step 6: Final answer
    x = 173.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.