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Finding the Fourth Proportional to 1,156, 1,722.44 and 1,067.68

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Solution

The fourth proportional to 1,156, 1,722.44 and 1,067.68 is: 1,590.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156 : 1,722.44 = 1,067.68 : x
  2. Step 2: Convert to fraction form
    1,156/1,722.44 = 1,067.68/x
  3. Step 3: Cross multiply
    1,156x = 1,722.44 × 1,067.68
  4. Step 4: Simplify right side
    1,156x = 1,839,014.74
  5. Step 5: Solve for x
    x = 1,839,014.74/1,156
  6. Step 6: Final answer
    x = 1,590.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.