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Finding the Fourth Proportional to 223.60, 308.55 and 125.35

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Solution

The fourth proportional to 223.60, 308.55 and 125.35 is: 172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.60 : 308.55 = 125.35 : x
  2. Step 2: Convert to fraction form
    223.60/308.55 = 125.35/x
  3. Step 3: Cross multiply
    223.60x = 308.55 × 125.35
  4. Step 4: Simplify right side
    223.60x = 38,676.74
  5. Step 5: Solve for x
    x = 38,676.74/223.60
  6. Step 6: Final answer
    x = 172.97

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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.