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Finding the Fourth Proportional to 1,050.73, 1,450.05 and 578.65

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Solution

The fourth proportional to 1,050.73, 1,450.05 and 578.65 is: 798.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.73 : 1,450.05 = 578.65 : x
  2. Step 2: Convert to fraction form
    1,050.73/1,450.05 = 578.65/x
  3. Step 3: Cross multiply
    1,050.73x = 1,450.05 × 578.65
  4. Step 4: Simplify right side
    1,050.73x = 839,071.43
  5. Step 5: Solve for x
    x = 839,071.43/1,050.73
  6. Step 6: Final answer
    x = 798.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.