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Finding the Fourth Proportional to 1,429.73, 2,146.57 and 736.89

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Solution

The fourth proportional to 1,429.73, 2,146.57 and 736.89 is: 1,106.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.73 : 2,146.57 = 736.89 : x
  2. Step 2: Convert to fraction form
    1,429.73/2,146.57 = 736.89/x
  3. Step 3: Cross multiply
    1,429.73x = 2,146.57 × 736.89
  4. Step 4: Simplify right side
    1,429.73x = 1,581,785.97
  5. Step 5: Solve for x
    x = 1,581,785.97/1,429.73
  6. Step 6: Final answer
    x = 1,106.36

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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.