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Finding the Fourth Proportional to 1,538.46, 2,305.83 and 887.85

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Solution

The fourth proportional to 1,538.46, 2,305.83 and 887.85 is: 1,330.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.46 : 2,305.83 = 887.85 : x
  2. Step 2: Convert to fraction form
    1,538.46/2,305.83 = 887.85/x
  3. Step 3: Cross multiply
    1,538.46x = 2,305.83 × 887.85
  4. Step 4: Simplify right side
    1,538.46x = 2,047,231.17
  5. Step 5: Solve for x
    x = 2,047,231.17/1,538.46
  6. Step 6: Final answer
    x = 1,330.70

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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.