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Finding the Fourth Proportional to 1,191.30, 1,787.25 and 962.27

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Solution

The fourth proportional to 1,191.30, 1,787.25 and 962.27 is: 1,443.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.30 : 1,787.25 = 962.27 : x
  2. Step 2: Convert to fraction form
    1,191.30/1,787.25 = 962.27/x
  3. Step 3: Cross multiply
    1,191.30x = 1,787.25 × 962.27
  4. Step 4: Simplify right side
    1,191.30x = 1,719,817.06
  5. Step 5: Solve for x
    x = 1,719,817.06/1,191.30
  6. Step 6: Final answer
    x = 1,443.65

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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.