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Finding the Fourth Proportional to 1,265.22, 1,896.40 and 956.07

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Solution

The fourth proportional to 1,265.22, 1,896.40 and 956.07 is: 1,433.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.22 : 1,896.40 = 956.07 : x
  2. Step 2: Convert to fraction form
    1,265.22/1,896.40 = 956.07/x
  3. Step 3: Cross multiply
    1,265.22x = 1,896.40 × 956.07
  4. Step 4: Simplify right side
    1,265.22x = 1,813,091.15
  5. Step 5: Solve for x
    x = 1,813,091.15/1,265.22
  6. Step 6: Final answer
    x = 1,433.02

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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.