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Finding the Fourth Proportional to 1,103.76, 1,523.21 and 606.42

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Solution

The fourth proportional to 1,103.76, 1,523.21 and 606.42 is: 836.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.76 : 1,523.21 = 606.42 : x
  2. Step 2: Convert to fraction form
    1,103.76/1,523.21 = 606.42/x
  3. Step 3: Cross multiply
    1,103.76x = 1,523.21 × 606.42
  4. Step 4: Simplify right side
    1,103.76x = 923,701.98
  5. Step 5: Solve for x
    x = 923,701.98/1,103.76
  6. Step 6: Final answer
    x = 836.87

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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.