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Finding the Fourth Proportional to 1,257.89, 1,885.64 and 794.25

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Solution

The fourth proportional to 1,257.89, 1,885.64 and 794.25 is: 1,190.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.89 : 1,885.64 = 794.25 : x
  2. Step 2: Convert to fraction form
    1,257.89/1,885.64 = 794.25/x
  3. Step 3: Cross multiply
    1,257.89x = 1,885.64 × 794.25
  4. Step 4: Simplify right side
    1,257.89x = 1,497,665.60
  5. Step 5: Solve for x
    x = 1,497,665.60/1,257.89
  6. Step 6: Final answer
    x = 1,190.62

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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.