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Finding the Fourth Proportional to 1,301.65, 1,796.32 and 712.22

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Solution

The fourth proportional to 1,301.65, 1,796.32 and 712.22 is: 982.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.65 : 1,796.32 = 712.22 : x
  2. Step 2: Convert to fraction form
    1,301.65/1,796.32 = 712.22/x
  3. Step 3: Cross multiply
    1,301.65x = 1,796.32 × 712.22
  4. Step 4: Simplify right side
    1,301.65x = 1,279,375.03
  5. Step 5: Solve for x
    x = 1,279,375.03/1,301.65
  6. Step 6: Final answer
    x = 982.89

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1.5x scale

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.