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Finding the Fourth Proportional to 800.16, 1,104.64 and 538.32

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Solution

The fourth proportional to 800.16, 1,104.64 and 538.32 is: 743.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.16 : 1,104.64 = 538.32 : x
  2. Step 2: Convert to fraction form
    800.16/1,104.64 = 538.32/x
  3. Step 3: Cross multiply
    800.16x = 1,104.64 × 538.32
  4. Step 4: Simplify right side
    800.16x = 594,649.80
  5. Step 5: Solve for x
    x = 594,649.80/800.16
  6. Step 6: Final answer
    x = 743.16

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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.