Home / 1,191.20-1,787.49-460.73

Finding the Fourth Proportional to 1,191.20, 1,787.49 and 460.73

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Solution

The fourth proportional to 1,191.20, 1,787.49 and 460.73 is: 691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.20 : 1,787.49 = 460.73 : x
  2. Step 2: Convert to fraction form
    1,191.20/1,787.49 = 460.73/x
  3. Step 3: Cross multiply
    1,191.20x = 1,787.49 × 460.73
  4. Step 4: Simplify right side
    1,191.20x = 823,554.74
  5. Step 5: Solve for x
    x = 823,554.74/1,191.20
  6. Step 6: Final answer
    x = 691.37

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1.5x scale

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.