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Finding the Fourth Proportional to 804.36, 1,109.96 and 450.32

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Solution

The fourth proportional to 804.36, 1,109.96 and 450.32 is: 621.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.36 : 1,109.96 = 450.32 : x
  2. Step 2: Convert to fraction form
    804.36/1,109.96 = 450.32/x
  3. Step 3: Cross multiply
    804.36x = 1,109.96 × 450.32
  4. Step 4: Simplify right side
    804.36x = 499,837.19
  5. Step 5: Solve for x
    x = 499,837.19/804.36
  6. Step 6: Final answer
    x = 621.41

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1.5x scale

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.