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Finding the Fourth Proportional to 960.32, 1,440.11 and 310.88

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Solution

The fourth proportional to 960.32, 1,440.11 and 310.88 is: 466.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.32 : 1,440.11 = 310.88 : x
  2. Step 2: Convert to fraction form
    960.32/1,440.11 = 310.88/x
  3. Step 3: Cross multiply
    960.32x = 1,440.11 × 310.88
  4. Step 4: Simplify right side
    960.32x = 447,692.64
  5. Step 5: Solve for x
    x = 447,692.64/960.32
  6. Step 6: Final answer
    x = 466.19

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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.