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Finding the Fourth Proportional to 965.28, 1,332.45 and 633.99

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Solution

The fourth proportional to 965.28, 1,332.45 and 633.99 is: 875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.28 : 1,332.45 = 633.99 : x
  2. Step 2: Convert to fraction form
    965.28/1,332.45 = 633.99/x
  3. Step 3: Cross multiply
    965.28x = 1,332.45 × 633.99
  4. Step 4: Simplify right side
    965.28x = 844,759.98
  5. Step 5: Solve for x
    x = 844,759.98/965.28
  6. Step 6: Final answer
    x = 875.15

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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.