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Finding the Fourth Proportional to 1,306.92, 1,804.41 and 810.29

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Solution

The fourth proportional to 1,306.92, 1,804.41 and 810.29 is: 1,118.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.92 : 1,804.41 = 810.29 : x
  2. Step 2: Convert to fraction form
    1,306.92/1,804.41 = 810.29/x
  3. Step 3: Cross multiply
    1,306.92x = 1,804.41 × 810.29
  4. Step 4: Simplify right side
    1,306.92x = 1,462,095.38
  5. Step 5: Solve for x
    x = 1,462,095.38/1,306.92
  6. Step 6: Final answer
    x = 1,118.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.