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Finding the Fourth Proportional to 1,950.80, 2,926.49 and 719.91

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Solution

The fourth proportional to 1,950.80, 2,926.49 and 719.91 is: 1,079.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,950.80 : 2,926.49 = 719.91 : x
  2. Step 2: Convert to fraction form
    1,950.80/2,926.49 = 719.91/x
  3. Step 3: Cross multiply
    1,950.80x = 2,926.49 × 719.91
  4. Step 4: Simplify right side
    1,950.80x = 2,106,805.82
  5. Step 5: Solve for x
    x = 2,106,805.82/1,950.80
  6. Step 6: Final answer
    x = 1,079.97

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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.