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Finding the Fourth Proportional to 801.94, 1,202.80 and 254.11

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Solution

The fourth proportional to 801.94, 1,202.80 and 254.11 is: 381.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.94 : 1,202.80 = 254.11 : x
  2. Step 2: Convert to fraction form
    801.94/1,202.80 = 254.11/x
  3. Step 3: Cross multiply
    801.94x = 1,202.80 × 254.11
  4. Step 4: Simplify right side
    801.94x = 305,643.51
  5. Step 5: Solve for x
    x = 305,643.51/801.94
  6. Step 6: Final answer
    x = 381.13

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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.