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Finding the Fourth Proportional to 1,301.55, 1,796.05 and 712.07

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Solution

The fourth proportional to 1,301.55, 1,796.05 and 712.07 is: 982.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.55 : 1,796.05 = 712.07 : x
  2. Step 2: Convert to fraction form
    1,301.55/1,796.05 = 712.07/x
  3. Step 3: Cross multiply
    1,301.55x = 1,796.05 × 712.07
  4. Step 4: Simplify right side
    1,301.55x = 1,278,916.03
  5. Step 5: Solve for x
    x = 1,278,916.03/1,301.55
  6. Step 6: Final answer
    x = 982.61

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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.