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Finding the Fourth Proportional to 804.99, 1,208.40 and 481.04

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Solution

The fourth proportional to 804.99, 1,208.40 and 481.04 is: 722.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.99 : 1,208.40 = 481.04 : x
  2. Step 2: Convert to fraction form
    804.99/1,208.40 = 481.04/x
  3. Step 3: Cross multiply
    804.99x = 1,208.40 × 481.04
  4. Step 4: Simplify right side
    804.99x = 581,288.74
  5. Step 5: Solve for x
    x = 581,288.74/804.99
  6. Step 6: Final answer
    x = 722.11

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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.