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Finding the Fourth Proportional to 1,250.73, 1,878.53 and 1,019.79

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Solution

The fourth proportional to 1,250.73, 1,878.53 and 1,019.79 is: 1,531.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250.73 : 1,878.53 = 1,019.79 : x
  2. Step 2: Convert to fraction form
    1,250.73/1,878.53 = 1,019.79/x
  3. Step 3: Cross multiply
    1,250.73x = 1,878.53 × 1,019.79
  4. Step 4: Simplify right side
    1,250.73x = 1,915,701.01
  5. Step 5: Solve for x
    x = 1,915,701.01/1,250.73
  6. Step 6: Final answer
    x = 1,531.67

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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.