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Finding the Fourth Proportional to 1,270.46, 1,903.64 and 961.88

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Solution

The fourth proportional to 1,270.46, 1,903.64 and 961.88 is: 1,441.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.46 : 1,903.64 = 961.88 : x
  2. Step 2: Convert to fraction form
    1,270.46/1,903.64 = 961.88/x
  3. Step 3: Cross multiply
    1,270.46x = 1,903.64 × 961.88
  4. Step 4: Simplify right side
    1,270.46x = 1,831,073.24
  5. Step 5: Solve for x
    x = 1,831,073.24/1,270.46
  6. Step 6: Final answer
    x = 1,441.27

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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.