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Finding the Fourth Proportional to 1,169.24, 1,613.67 and 672.00

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Solution

The fourth proportional to 1,169.24, 1,613.67 and 672.00 is: 927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.24 : 1,613.67 = 672.00 : x
  2. Step 2: Convert to fraction form
    1,169.24/1,613.67 = 672.00/x
  3. Step 3: Cross multiply
    1,169.24x = 1,613.67 × 672.00
  4. Step 4: Simplify right side
    1,169.24x = 1,084,381.45
  5. Step 5: Solve for x
    x = 1,084,381.45/1,169.24
  6. Step 6: Final answer
    x = 927.43

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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.