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Finding the Fourth Proportional to 801.37, 1,201.82 and 314.30

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Solution

The fourth proportional to 801.37, 1,201.82 and 314.30 is: 471.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.37 : 1,201.82 = 314.30 : x
  2. Step 2: Convert to fraction form
    801.37/1,201.82 = 314.30/x
  3. Step 3: Cross multiply
    801.37x = 1,201.82 × 314.30
  4. Step 4: Simplify right side
    801.37x = 377,733.46
  5. Step 5: Solve for x
    x = 377,733.46/801.37
  6. Step 6: Final answer
    x = 471.36

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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.