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Finding the Fourth Proportional to 1,169.62, 1,613.38 and 755.62

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Solution

The fourth proportional to 1,169.62, 1,613.38 and 755.62 is: 1,042.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.62 : 1,613.38 = 755.62 : x
  2. Step 2: Convert to fraction form
    1,169.62/1,613.38 = 755.62/x
  3. Step 3: Cross multiply
    1,169.62x = 1,613.38 × 755.62
  4. Step 4: Simplify right side
    1,169.62x = 1,219,102.20
  5. Step 5: Solve for x
    x = 1,219,102.20/1,169.62
  6. Step 6: Final answer
    x = 1,042.31

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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.