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Finding the Fourth Proportional to 794.19, 1,192.83 and 486.65

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Solution

The fourth proportional to 794.19, 1,192.83 and 486.65 is: 730.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.19 : 1,192.83 = 486.65 : x
  2. Step 2: Convert to fraction form
    794.19/1,192.83 = 486.65/x
  3. Step 3: Cross multiply
    794.19x = 1,192.83 × 486.65
  4. Step 4: Simplify right side
    794.19x = 580,483.49
  5. Step 5: Solve for x
    x = 580,483.49/794.19
  6. Step 6: Final answer
    x = 730.91

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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.