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Finding the Fourth Proportional to 1,234.48, 1,849.64 and 868.62

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Solution

The fourth proportional to 1,234.48, 1,849.64 and 868.62 is: 1,301.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234.48 : 1,849.64 = 868.62 : x
  2. Step 2: Convert to fraction form
    1,234.48/1,849.64 = 868.62/x
  3. Step 3: Cross multiply
    1,234.48x = 1,849.64 × 868.62
  4. Step 4: Simplify right side
    1,234.48x = 1,606,634.30
  5. Step 5: Solve for x
    x = 1,606,634.30/1,234.48
  6. Step 6: Final answer
    x = 1,301.47

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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.