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Finding the Fourth Proportional to 800.03, 1,104.03 and 445.95

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Solution

The fourth proportional to 800.03, 1,104.03 and 445.95 is: 615.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.03 : 1,104.03 = 445.95 : x
  2. Step 2: Convert to fraction form
    800.03/1,104.03 = 445.95/x
  3. Step 3: Cross multiply
    800.03x = 1,104.03 × 445.95
  4. Step 4: Simplify right side
    800.03x = 492,342.18
  5. Step 5: Solve for x
    x = 492,342.18/800.03
  6. Step 6: Final answer
    x = 615.40

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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.