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Finding the Fourth Proportional to 966.89, 1,449.38 and 619.23

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Solution

The fourth proportional to 966.89, 1,449.38 and 619.23 is: 928.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.89 : 1,449.38 = 619.23 : x
  2. Step 2: Convert to fraction form
    966.89/1,449.38 = 619.23/x
  3. Step 3: Cross multiply
    966.89x = 1,449.38 × 619.23
  4. Step 4: Simplify right side
    966.89x = 897,496.48
  5. Step 5: Solve for x
    x = 897,496.48/966.89
  6. Step 6: Final answer
    x = 928.23

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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.