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Finding the Fourth Proportional to 887.75, 1,331.90 and 310.63

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Solution

The fourth proportional to 887.75, 1,331.90 and 310.63 is: 466.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.75 : 1,331.90 = 310.63 : x
  2. Step 2: Convert to fraction form
    887.75/1,331.90 = 310.63/x
  3. Step 3: Cross multiply
    887.75x = 1,331.90 × 310.63
  4. Step 4: Simplify right side
    887.75x = 413,728.10
  5. Step 5: Solve for x
    x = 413,728.10/887.75
  6. Step 6: Final answer
    x = 466.04

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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.