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Finding the Fourth Proportional to 845.29, 1,267.56 and 297.31

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Solution

The fourth proportional to 845.29, 1,267.56 and 297.31 is: 445.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.29 : 1,267.56 = 297.31 : x
  2. Step 2: Convert to fraction form
    845.29/1,267.56 = 297.31/x
  3. Step 3: Cross multiply
    845.29x = 1,267.56 × 297.31
  4. Step 4: Simplify right side
    845.29x = 376,858.26
  5. Step 5: Solve for x
    x = 376,858.26/845.29
  6. Step 6: Final answer
    x = 445.83

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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.