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Finding the Fourth Proportional to 965.58, 1,331.99 and 744.45

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Solution

The fourth proportional to 965.58, 1,331.99 and 744.45 is: 1,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.58 : 1,331.99 = 744.45 : x
  2. Step 2: Convert to fraction form
    965.58/1,331.99 = 744.45/x
  3. Step 3: Cross multiply
    965.58x = 1,331.99 × 744.45
  4. Step 4: Simplify right side
    965.58x = 991,589.57
  5. Step 5: Solve for x
    x = 991,589.57/965.58
  6. Step 6: Final answer
    x = 1,026.94

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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.