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Finding the Fourth Proportional to 887.67, 1,331.43 and 229.56

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Solution

The fourth proportional to 887.67, 1,331.43 and 229.56 is: 344.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.67 : 1,331.43 = 229.56 : x
  2. Step 2: Convert to fraction form
    887.67/1,331.43 = 229.56/x
  3. Step 3: Cross multiply
    887.67x = 1,331.43 × 229.56
  4. Step 4: Simplify right side
    887.67x = 305,643.07
  5. Step 5: Solve for x
    x = 305,643.07/887.67
  6. Step 6: Final answer
    x = 344.32

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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.