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Finding the Fourth Proportional to 1,010.57, 1,513.97 and 793.49

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Solution

The fourth proportional to 1,010.57, 1,513.97 and 793.49 is: 1,188.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.57 : 1,513.97 = 793.49 : x
  2. Step 2: Convert to fraction form
    1,010.57/1,513.97 = 793.49/x
  3. Step 3: Cross multiply
    1,010.57x = 1,513.97 × 793.49
  4. Step 4: Simplify right side
    1,010.57x = 1,201,316.09
  5. Step 5: Solve for x
    x = 1,201,316.09/1,010.57
  6. Step 6: Final answer
    x = 1,188.75

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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.