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Finding the Fourth Proportional to 801.56, 1,202.44 and 339.28

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Solution

The fourth proportional to 801.56, 1,202.44 and 339.28 is: 508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.56 : 1,202.44 = 339.28 : x
  2. Step 2: Convert to fraction form
    801.56/1,202.44 = 339.28/x
  3. Step 3: Cross multiply
    801.56x = 1,202.44 × 339.28
  4. Step 4: Simplify right side
    801.56x = 407,963.84
  5. Step 5: Solve for x
    x = 407,963.84/801.56
  6. Step 6: Final answer
    x = 508.96

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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.