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Finding the Fourth Proportional to 963.51, 1,331.31 and 744.36

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Solution

The fourth proportional to 963.51, 1,331.31 and 744.36 is: 1,028.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.51 : 1,331.31 = 744.36 : x
  2. Step 2: Convert to fraction form
    963.51/1,331.31 = 744.36/x
  3. Step 3: Cross multiply
    963.51x = 1,331.31 × 744.36
  4. Step 4: Simplify right side
    963.51x = 990,973.91
  5. Step 5: Solve for x
    x = 990,973.91/963.51
  6. Step 6: Final answer
    x = 1,028.50

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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.