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Finding the Fourth Proportional to 1,353.30, 1,866.02 and 1,103.85

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Solution

The fourth proportional to 1,353.30, 1,866.02 and 1,103.85 is: 1,522.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.30 : 1,866.02 = 1,103.85 : x
  2. Step 2: Convert to fraction form
    1,353.30/1,866.02 = 1,103.85/x
  3. Step 3: Cross multiply
    1,353.30x = 1,866.02 × 1,103.85
  4. Step 4: Simplify right side
    1,353.30x = 2,059,800.66
  5. Step 5: Solve for x
    x = 2,059,800.66/1,353.30
  6. Step 6: Final answer
    x = 1,522.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.