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Finding the Fourth Proportional to 801.25, 1,105.73 and 433.25

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Solution

The fourth proportional to 801.25, 1,105.73 and 433.25 is: 597.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.25 : 1,105.73 = 433.25 : x
  2. Step 2: Convert to fraction form
    801.25/1,105.73 = 433.25/x
  3. Step 3: Cross multiply
    801.25x = 1,105.73 × 433.25
  4. Step 4: Simplify right side
    801.25x = 479,055.36
  5. Step 5: Solve for x
    x = 479,055.36/801.25
  6. Step 6: Final answer
    x = 597.89

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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.