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Finding the Fourth Proportional to 845.00, 1,267.61 and 324.88

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Solution

The fourth proportional to 845.00, 1,267.61 and 324.88 is: 487.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.00 : 1,267.61 = 324.88 : x
  2. Step 2: Convert to fraction form
    845.00/1,267.61 = 324.88/x
  3. Step 3: Cross multiply
    845.00x = 1,267.61 × 324.88
  4. Step 4: Simplify right side
    845.00x = 411,822.68
  5. Step 5: Solve for x
    x = 411,822.68/845.00
  6. Step 6: Final answer
    x = 487.36

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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.