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Finding the Fourth Proportional to 1,253.27, 1,879.61 and 603.86

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Solution

The fourth proportional to 1,253.27, 1,879.61 and 603.86 is: 905.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.27 : 1,879.61 = 603.86 : x
  2. Step 2: Convert to fraction form
    1,253.27/1,879.61 = 603.86/x
  3. Step 3: Cross multiply
    1,253.27x = 1,879.61 × 603.86
  4. Step 4: Simplify right side
    1,253.27x = 1,135,008.88
  5. Step 5: Solve for x
    x = 1,135,008.88/1,253.27
  6. Step 6: Final answer
    x = 905.64

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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.