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Finding the Fourth Proportional to 1,169.48, 1,613.97 and 672.26

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Solution

The fourth proportional to 1,169.48, 1,613.97 and 672.26 is: 927.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.48 : 1,613.97 = 672.26 : x
  2. Step 2: Convert to fraction form
    1,169.48/1,613.97 = 672.26/x
  3. Step 3: Cross multiply
    1,169.48x = 1,613.97 × 672.26
  4. Step 4: Simplify right side
    1,169.48x = 1,084,999.40
  5. Step 5: Solve for x
    x = 1,084,999.40/1,169.48
  6. Step 6: Final answer
    x = 927.76

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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.