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Finding the Fourth Proportional to 741.89, 1,112.82 and 228.89

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Solution

The fourth proportional to 741.89, 1,112.82 and 228.89 is: 343.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.89 : 1,112.82 = 228.89 : x
  2. Step 2: Convert to fraction form
    741.89/1,112.82 = 228.89/x
  3. Step 3: Cross multiply
    741.89x = 1,112.82 × 228.89
  4. Step 4: Simplify right side
    741.89x = 254,713.37
  5. Step 5: Solve for x
    x = 254,713.37/741.89
  6. Step 6: Final answer
    x = 343.33

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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.