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Finding the Fourth Proportional to 801.34, 1,201.20 and 492.34

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Solution

The fourth proportional to 801.34, 1,201.20 and 492.34 is: 738.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.34 : 1,201.20 = 492.34 : x
  2. Step 2: Convert to fraction form
    801.34/1,201.20 = 492.34/x
  3. Step 3: Cross multiply
    801.34x = 1,201.20 × 492.34
  4. Step 4: Simplify right side
    801.34x = 591,398.81
  5. Step 5: Solve for x
    x = 591,398.81/801.34
  6. Step 6: Final answer
    x = 738.01

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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.