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Finding the Fourth Proportional to 1,191.99, 1,787.73 and 606.37

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Solution

The fourth proportional to 1,191.99, 1,787.73 and 606.37 is: 909.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.99 : 1,787.73 = 606.37 : x
  2. Step 2: Convert to fraction form
    1,191.99/1,787.73 = 606.37/x
  3. Step 3: Cross multiply
    1,191.99x = 1,787.73 × 606.37
  4. Step 4: Simplify right side
    1,191.99x = 1,084,022.81
  5. Step 5: Solve for x
    x = 1,084,022.81/1,191.99
  6. Step 6: Final answer
    x = 909.42

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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.