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Finding the Fourth Proportional to 964.43, 1,331.03 and 544.80

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Solution

The fourth proportional to 964.43, 1,331.03 and 544.80 is: 751.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.43 : 1,331.03 = 544.80 : x
  2. Step 2: Convert to fraction form
    964.43/1,331.03 = 544.80/x
  3. Step 3: Cross multiply
    964.43x = 1,331.03 × 544.80
  4. Step 4: Simplify right side
    964.43x = 725,147.75
  5. Step 5: Solve for x
    x = 725,147.75/964.43
  6. Step 6: Final answer
    x = 751.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.