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Finding the Fourth Proportional to 887.56, 1,331.61 and 310.44

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Solution

The fourth proportional to 887.56, 1,331.61 and 310.44 is: 465.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.56 : 1,331.61 = 310.44 : x
  2. Step 2: Convert to fraction form
    887.56/1,331.61 = 310.44/x
  3. Step 3: Cross multiply
    887.56x = 1,331.61 × 310.44
  4. Step 4: Simplify right side
    887.56x = 413,385.01
  5. Step 5: Solve for x
    x = 413,385.01/887.56
  6. Step 6: Final answer
    x = 465.75

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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.