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Finding the Fourth Proportional to 887.97, 1,331.95 and 310.44

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Solution

The fourth proportional to 887.97, 1,331.95 and 310.44 is: 465.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.97 : 1,331.95 = 310.44 : x
  2. Step 2: Convert to fraction form
    887.97/1,331.95 = 310.44/x
  3. Step 3: Cross multiply
    887.97x = 1,331.95 × 310.44
  4. Step 4: Simplify right side
    887.97x = 413,490.56
  5. Step 5: Solve for x
    x = 413,490.56/887.97
  6. Step 6: Final answer
    x = 465.66

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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.