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Finding the Fourth Proportional to 1,227.69, 1,841.49 and 406.35

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Solution

The fourth proportional to 1,227.69, 1,841.49 and 406.35 is: 609.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.69 : 1,841.49 = 406.35 : x
  2. Step 2: Convert to fraction form
    1,227.69/1,841.49 = 406.35/x
  3. Step 3: Cross multiply
    1,227.69x = 1,841.49 × 406.35
  4. Step 4: Simplify right side
    1,227.69x = 748,289.46
  5. Step 5: Solve for x
    x = 748,289.46/1,227.69
  6. Step 6: Final answer
    x = 609.51

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1.5x scale

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.