Home / 1,170.16-1,613.36-749.82

Finding the Fourth Proportional to 1,170.16, 1,613.36 and 749.82

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Solution

The fourth proportional to 1,170.16, 1,613.36 and 749.82 is: 1,033.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.16 : 1,613.36 = 749.82 : x
  2. Step 2: Convert to fraction form
    1,170.16/1,613.36 = 749.82/x
  3. Step 3: Cross multiply
    1,170.16x = 1,613.36 × 749.82
  4. Step 4: Simplify right side
    1,170.16x = 1,209,736.44
  5. Step 5: Solve for x
    x = 1,209,736.44/1,170.16
  6. Step 6: Final answer
    x = 1,033.82

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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.