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Finding the Fourth Proportional to 1,232.69, 1,849.21 and 410.78

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Solution

The fourth proportional to 1,232.69, 1,849.21 and 410.78 is: 616.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232.69 : 1,849.21 = 410.78 : x
  2. Step 2: Convert to fraction form
    1,232.69/1,849.21 = 410.78/x
  3. Step 3: Cross multiply
    1,232.69x = 1,849.21 × 410.78
  4. Step 4: Simplify right side
    1,232.69x = 759,622.08
  5. Step 5: Solve for x
    x = 759,622.08/1,232.69
  6. Step 6: Final answer
    x = 616.23

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Double scale
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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.