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Finding the Fourth Proportional to 801.49, 1,201.81 and 368.27

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Solution

The fourth proportional to 801.49, 1,201.81 and 368.27 is: 552.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.49 : 1,201.81 = 368.27 : x
  2. Step 2: Convert to fraction form
    801.49/1,201.81 = 368.27/x
  3. Step 3: Cross multiply
    801.49x = 1,201.81 × 368.27
  4. Step 4: Simplify right side
    801.49x = 442,590.57
  5. Step 5: Solve for x
    x = 442,590.57/801.49
  6. Step 6: Final answer
    x = 552.21

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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.