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Finding the Fourth Proportional to 1,671.26, 2,505.55 and 793.32

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Solution

The fourth proportional to 1,671.26, 2,505.55 and 793.32 is: 1,189.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.26 : 2,505.55 = 793.32 : x
  2. Step 2: Convert to fraction form
    1,671.26/2,505.55 = 793.32/x
  3. Step 3: Cross multiply
    1,671.26x = 2,505.55 × 793.32
  4. Step 4: Simplify right side
    1,671.26x = 1,987,693.03
  5. Step 5: Solve for x
    x = 1,987,693.03/1,671.26
  6. Step 6: Final answer
    x = 1,189.34

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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.