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Finding the Fourth Proportional to 1,226.52, 1,838.72 and 609.92

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Solution

The fourth proportional to 1,226.52, 1,838.72 and 609.92 is: 914.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.52 : 1,838.72 = 609.92 : x
  2. Step 2: Convert to fraction form
    1,226.52/1,838.72 = 609.92/x
  3. Step 3: Cross multiply
    1,226.52x = 1,838.72 × 609.92
  4. Step 4: Simplify right side
    1,226.52x = 1,121,459.86
  5. Step 5: Solve for x
    x = 1,121,459.86/1,226.52
  6. Step 6: Final answer
    x = 914.34

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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.