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Finding the Fourth Proportional to 965.95, 1,448.69 and 445.62

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Solution

The fourth proportional to 965.95, 1,448.69 and 445.62 is: 668.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.95 : 1,448.69 = 445.62 : x
  2. Step 2: Convert to fraction form
    965.95/1,448.69 = 445.62/x
  3. Step 3: Cross multiply
    965.95x = 1,448.69 × 445.62
  4. Step 4: Simplify right side
    965.95x = 645,565.24
  5. Step 5: Solve for x
    x = 645,565.24/965.95
  6. Step 6: Final answer
    x = 668.33

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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.