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Finding the Fourth Proportional to 804.10, 1,109.67 and 450.06

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Solution

The fourth proportional to 804.10, 1,109.67 and 450.06 is: 621.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.10 : 1,109.67 = 450.06 : x
  2. Step 2: Convert to fraction form
    804.10/1,109.67 = 450.06/x
  3. Step 3: Cross multiply
    804.10x = 1,109.67 × 450.06
  4. Step 4: Simplify right side
    804.10x = 499,418.08
  5. Step 5: Solve for x
    x = 499,418.08/804.10
  6. Step 6: Final answer
    x = 621.09

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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.