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Finding the Fourth Proportional to 1,303.92, 1,958.16 and 1,123.92

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Solution

The fourth proportional to 1,303.92, 1,958.16 and 1,123.92 is: 1,687.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,303.92 : 1,958.16 = 1,123.92 : x
  2. Step 2: Convert to fraction form
    1,303.92/1,958.16 = 1,123.92/x
  3. Step 3: Cross multiply
    1,303.92x = 1,958.16 × 1,123.92
  4. Step 4: Simplify right side
    1,303.92x = 2,200,815.19
  5. Step 5: Solve for x
    x = 2,200,815.19/1,303.92
  6. Step 6: Final answer
    x = 1,687.85

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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.