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Finding the Fourth Proportional to 960.46, 1,319.69 and 763.63

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Solution

The fourth proportional to 960.46, 1,319.69 and 763.63 is: 1,049.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.46 : 1,319.69 = 763.63 : x
  2. Step 2: Convert to fraction form
    960.46/1,319.69 = 763.63/x
  3. Step 3: Cross multiply
    960.46x = 1,319.69 × 763.63
  4. Step 4: Simplify right side
    960.46x = 1,007,747.76
  5. Step 5: Solve for x
    x = 1,007,747.76/960.46
  6. Step 6: Final answer
    x = 1,049.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.