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Finding the Fourth Proportional to 887.30, 1,224.43 and 488.96

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Solution

The fourth proportional to 887.30, 1,224.43 and 488.96 is: 674.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.30 : 1,224.43 = 488.96 : x
  2. Step 2: Convert to fraction form
    887.30/1,224.43 = 488.96/x
  3. Step 3: Cross multiply
    887.30x = 1,224.43 × 488.96
  4. Step 4: Simplify right side
    887.30x = 598,694.85
  5. Step 5: Solve for x
    x = 598,694.85/887.30
  6. Step 6: Final answer
    x = 674.74

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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.