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Finding the Fourth Proportional to 887.25, 1,331.10 and 310.17

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Solution

The fourth proportional to 887.25, 1,331.10 and 310.17 is: 465.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.25 : 1,331.10 = 310.17 : x
  2. Step 2: Convert to fraction form
    887.25/1,331.10 = 310.17/x
  3. Step 3: Cross multiply
    887.25x = 1,331.10 × 310.17
  4. Step 4: Simplify right side
    887.25x = 412,867.29
  5. Step 5: Solve for x
    x = 412,867.29/887.25
  6. Step 6: Final answer
    x = 465.33

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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.