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Finding the Fourth Proportional to 801.97, 1,203.33 and 436.75

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Solution

The fourth proportional to 801.97, 1,203.33 and 436.75 is: 655.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.97 : 1,203.33 = 436.75 : x
  2. Step 2: Convert to fraction form
    801.97/1,203.33 = 436.75/x
  3. Step 3: Cross multiply
    801.97x = 1,203.33 × 436.75
  4. Step 4: Simplify right side
    801.97x = 525,553.01
  5. Step 5: Solve for x
    x = 525,553.01/801.97
  6. Step 6: Final answer
    x = 655.33

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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.